Java Edition 1.21: Difference between revisions

Minecraft 1.21
Edition	Java Edition
Official name	Tricky Trials
Release date	June 13, 2024
Development versions	Snapshots (6) ; Pre-releases (4) ; Release candidates (1) ; (View all)
Downloads	Client (.json); Server
Obfuscation maps	Client; Server
Protocol version	767
Data version	3953
Resource pack format	34
Data pack format	48
Minimum Java version	Java SE 21
◄ 1.20.6	1.21.1 ►

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Revision as of 11:45, 10 April 2025

This page covers a release version that has a critical issue under certain conditions.

Modified clients can crash the server by requesting command completion for a malicious target selector input, causing a crash due to stack exhaustion. This was fixed in 1.21.1.

Other editions with a version "1.21":

There is a guide for this update!

See Java Edition guides/Tricky Trials for a guide to all of the new features introduced in Tricky Trials.

1.21, the release of Tricky Trials, is a update to Java Edition that was launched on June 13, 2024.^[1] It Was Originally announced at Minecraft Live 2023 on October 15, 2023, the name of the update was revealed in a Minecraft Monthly on April 26, 2024. The update was said to focus on "combat adventures and tinkering" and introduces several copper block variants and a new structure called trial chambers, as well as the new crafter, new tuff variants, the new mace weapon, twenty new paintings, and new hostile mobs that spawn in the trial chambers, among others. It also includes some changes to the Bad Omen effect and many bug fixes.

1.21 is the first major version of Java Edition to require a 64-bit operating system and Java 21 or above.

Additions

1.21 block and item additions

Blocks

Chiseled copper

Generates in trial chambers.
Can be crafted both in a crafting table and stonecutter:
- When in a crafting table, it consumes 2 cut copper slabs from the same type, resulting in 1 chiseled copper with the same type.
- When in a stonecutter, it consumes 1 block of copper, resulting in 4 chiseled copper, or 1 cut copper, resulting in 1 chiseled copper; all from the same type.

Have 8 variants in 4 oxidation levels, waxed or not waxed.
- Oxidation can be reversed with an axe.
- Honeycomb prevents oxidation from occurring.

Chiseled tuff

Can be crafted from tuff slabs or can be obtained by cutting tuff using a stonecutter.

Generates in trial chambers.

Copper bulb

Generates in trial chambers.
Can be crafted from 3 blocks of copper, a blaze rod, and a piece of redstone dust.

4

Emits light based on its oxidation level.
- The light gets dimmer with increased oxidation. From less oxidized to most oxidized, they emit block light levels of 15, 12, 8, and 4, respectively.
- Have 8 variants in 4 oxidation levels, waxed or not waxed.
- Oxidation can be reversed with an axe.
- Honeycomb prevents oxidation from occurring.
Defaults to an off state but can be toggled with a redstone pulse.
- While powered by a redstone signal, a redstone crystal in the center of them glow.
They have following properties:
- Toggle their light on or off only when receiving a redstone pulse. Their state does not change if the source of the redstone pulse is removed.
- The block state is readable, allowing the block to function as a T flip-flop. When the light is on, redstone comparators read a redstone signal strength of 15.
- They don't conduct redstone power.

Copper door

Generates in trial chambers.
Can be crafted as other doors.

3

Can be opened by a player.
Can also be toggled opened and closed with redstone.
Have 8 variants in 4 oxidation levels, waxed or not waxed.
- Oxidation can be reversed with an axe.
- Honeycomb prevents oxidation from occurring.

Copper grate

Generates in trial chambers.
Can be crafted both in crafting table and stonecutter:
- When in crafting table, consumes 4 blocks of copper from the same type in rhombic pattern, resulting in 4 copper grates with the same type.
- When in stonecutter, consumes 1 block of copper, resulting in 1 copper grate from the same type.

4

A new type of decorative block unique to the copper family.
Has its own exclusive breaking sound.
Have 8 variants in 4 oxidation levels, waxed or not waxed.
- Oxidation can be reversed with an axe.
- Honeycomb prevents oxidation from occurring.
Can be waterlogged.
- Acts similarly to waterlogged mangrove roots; water does not flow out of any of the block's faces.
They are transparent, so they allow light to pass through and cannot conduct redstone, prevent mob spawning on top of them, and do not suffocate mobs who end up with their head inside them.

Copper trapdoor

Generates in trial chambers.
Can be crafted as other trapdoors.

2

Can be opened by a player.
Can also be toggled opened and closed with redstone.
Have 8 variants in 4 oxidation levels, waxed or not waxed.
- Oxidation can be reversed with an axe.
- Honeycomb prevents oxidation from occurring.

Crafter

A new block that enables the crafting of items and blocks via redstone.
A variant of crafting table, can be crafted with five iron ingots, a crafting table, two redstone dusts, and a dropper in the crafting table.

The crafter ejects one crafted item at a time when powered by a new redstone pulse.
- Upon receiving this new pulse, the crafter ejects the result from the front face.
- All the result items are ejected together when the output result has multiple type of items.
Crafters can be oriented in any direction when placed.
They have a unique user interface:
- They have a 3×3 interactable crafting grid.
- Their crafting grid slots are toggleable, meaning that the player can change the behavior of a slot by clicking or pressing on a slot with an empty hand.
  - A "toggled" slot cannot hold any items and therefore cannot have items placed into it by other blocks such as hoppers and droppers.
  - A "toggled" slot can be toggled off by player, whether clicked directly or holding item(s), pressing slot keys associated with an empty or a not empty hotbar slot.
- Unlike the crafting table, the slots display a preview of the item to be crafted and ejected on the next redstone pulse, but cannot be manually taken out by the player.
- The user interface is shared between all players interacting with them, meaning that multiple players can interact with them at the same time, similar to chests and hoppers.
- The user interface does not have a recipe book to provide help, so the player must know the recipes.
They interact with other blocks in the following ways:
- When read by a redstone comparator, the redstone signal strength is 0 to 9, where each non-empty or toggled slot adds 1 strength.
- Hoppers can be used to both insert and pull items out of them.
- Droppers can be used to insert items into them.
- Moving items in from another block with a hopper or a dropper prioritizes filling items into slots following these rules:
  - Crafters prioritize the first empty slot from left-to-right and top-to-bottom.
  - If there are no empty slots then crafters prioritize the smallest stack of the same item and pick the first if there are multiple.
  - If there is a toggled slot, it is skipped. The item is then moved into the container.
  - If the item cannot be moved, it is ejected into the world.
- If failed to select a slot, hoppers and droppers do not take any action.
A pickaxe can increase the speed of mining them.

Heavy core

A mysterious, dense block that can be combined with a breeze rod to craft a mace.
The heavy core block has a 7.5% chance of being rewarded when using a ominous trial key on a ominous vault in the trial chambers.
When placed, it has the same size as a player head, and can be oriented in 12 directions.
Mining a heavy core is slow - it takes 15 seconds to mine.
- The appropriate tool is the pickaxe.
Are resistant to explosions: blast resistance matches the one from obsidian.
Can be waterlogged.
Epic rarity.

Ominous trial spawner

A more powerful active phase of the trial spawner with unique challenges and rewards.
- Provides a more challenging experience that advanced players can opt into for better rewards.
If a trial spawner detects a player that has the Trial Omen effect, the spawner becomes ominous if:
- It is not in cooldown.
- Or, it is in cooldown but was not ominous during its last activation.
  - Making it ominous this way bypasses the cooldown.
While active, it:
- Glows blue instead of orange.
- Emits soul flames instead of normal flames.
- Commonly spawns mobs with equipment if they can wear it.
  - Mobs that can wear equipment often spawn with enchanted weapons and armor.
    - Armor enchantments include Protection IV, Projectile Protection IV and Fire Protection IV.
    - Weapon enchantments include Sharpness I, Knockback I, Power I and Punch I.
  - The armor these mobs wear have armor trims applied from the trial chambers.
- Periodically spawn potions and projectiles on top of unsuspecting players and mobs.
  - Based on their location, spawners in an area select a random set of projectiles to spawn.
  - These projectiles always include a single type of lingering potion from a set of possible effects.
  - Players are chosen 50% of the time when an ominous trial spawner chooses which entity to drop projectiles on top of.
Becoming ominous despawns any existing mobs it spawned and reset its challenge.
- It remains ominous until it has been defeated and its cooldown has finished.
- Mobs removed by a trial spawner converting to ominous state drop any items they previously picked up from the ground.
When defeated, it ejects a different set of loot to normal trial spawners.

In Java Edition and Bedrock Edition, each trial chamber ominous trial spawner contains 1 item stack, with the following distribution:

Item	Stack Size ^[A]	Weight ^[B]	Chance ^[C]	Avg. per spawner ^[D]	[hide] Avg. # spawners to defeat ^[E]
Ominous Trial Key	1	³⁰⁄₁₀₀	30.0%	0.300	3.3
Baked Potato	2–4	²¹⁄₁₀₀	21.0%	0.630	4.8
Steak	1–2	²¹⁄₁₀₀	21.0%	0.315	4.8
Golden Carrot	1–2	¹⁴⁄₁₀₀	14.0%	0.210	7.1
Potion of Regeneration	1	⁷⁄₁₀₀	7.0%	0.070	14.3
Potion of Strength	1	⁷⁄₁₀₀	7.0%	0.070	14.3

↑ The size of stacks (or for unstackable items, number) of this item on any given roll.
↑ The weight of this item relative to other items in the pool.
↑ The odds of finding any of this item in a single chest.
↑ The number of items expected per chest, averaged over a large number of chests.
↑ The average number of chests the player should expect to search to find any of this item.

Ominous trial keys have a 30% chance of ejecting from a defeated ominous trial spawner, replacing the usual 50% chance to eject trial keys.

Ominous vault

A variant of vaults that have a different texture and emit soul flames instead of normal flames.
These can be found throughout the trial chambers in harder to find places and require an ominous trial key to unlock.
These vaults hold a more valuable set of rewards than the standard vaults unlocked by trial keys.
Ominous vaults can provide some particularly valuable items.

In Java Edition and Bedrock Edition, each trial chambers ominous vault contains items drawn from 3 pools, with the following distribution:

Item	Stack Size ^[A]			Weight ^[B]			Chance ^[C]	Avg. per container ^[D]	[hide] Avg. # containers to loot ^[E]
Item	1×	1–3×	1×	1×	1–3×	1×	Chance ^[C]	Avg. per container ^[D]	[hide] Avg. # containers to loot ^[E]
Emerald	4–10	4–10	—	¹⁴⁵⁄₂₁₇₅	⁵⁄₁₅	—	56.2%	5.133	1.8
Wind Charge	8–12	8–12	—	¹¹⁶⁄₂₁₇₅	⁴⁄₁₅	—	47.4%	5.867	2.1
Arrow of Slowness IV	4–12	4–12	—	⁸⁷⁄₂₁₇₅	³⁄₁₅	—	37.5%	3.520	2.7
Diamond	2–3	2–3	—	⁵⁸⁄₂₁₇₅	²⁄₁₅	—	26.4%	0.733	3.8
Nothing^[F]	—	—	1	—	—	¹⁰⁄₄₀	25.0%	0.250	4.0
Flow Armor Trim Smithing Template	—	—	1	—	—	⁹⁄₄₀	22.5%	0.225	4.4
Enchanted Golden Apple	—	—	1	—	—	⁹⁄₄₀	22.5%	0.225	4.4
Flow Banner Pattern	—	—	1	—	—	⁶⁄₄₀	15.0%	0.150	6.7
Ominous Bottle III - V^[G]	1	1	—	²⁹⁄₂₁₇₅	¹⁄₁₅	—	13.9%	0.147	7.2
Block of Emerald	1	—	—	³⁰⁰⁄₂₁₇₅	—	—	13.8%	0.138	7.2
Enchanted Crossbow^[H]	1	—	—	²⁴⁰⁄₂₁₇₅	—	—	11.0%	0.110	9.1
Block of Iron	1	—	—	²⁴⁰⁄₂₁₇₅	—	—	11.0%	0.110	9.1
Golden Apple	1	—	—	¹⁸⁰⁄₂₁₇₅	—	—	8.3%	0.083	12.1
Enchanted Diamond Axe^[I]	1	—	—	¹⁸⁰⁄₂₁₇₅	—	—	8.3%	0.083	12.1
Enchanted Diamond Chestplate^[I]	1	—	—	¹⁸⁰⁄₂₁₇₅	—	—	8.3%	0.083	12.1
Music Disc (Creator)	—	—	1	—	—	³⁄₄₀	7.5%	0.075	13.3
Heavy Core	—	—	1	—	—	³⁄₄₀	7.5%	0.075	13.3
Enchanted Book^[J]	1	—	—	¹²⁰⁄₂₁₇₅	—	—	5.5%	0.055	18.1
Enchanted Book^[K]	1	—	—	¹²⁰⁄₂₁₇₅	—	—	5.5%	0.055	18.1
Enchanted Book^[L]	1	—	—	¹²⁰⁄₂₁₇₅	—	—	5.5%	0.055	18.1
Block of Diamond	1	—	—	⁶⁰⁄₂₁₇₅	—	—	2.8%	0.028	36.2

↑ The size of stacks (or for unstackable items, number) of this item on any given roll.
↑ The weight of this item relative to other items in the pool.
↑ The odds of finding any of this item in a single chest.
↑ The number of items expected per chest, averaged over a large number of chests.
↑ The average number of chests the player should expect to search to find any of this item.
↑ 'Nothing' does not refer to the chance of an empty chest. Instead, it refers to the chance that the random loot generator does not add any loot on a single roll.
↑ Ominous bottle level between III and V
↑ Enchantment probabilities are the same as a level-5 to level-20 enchantment would be on an enchantment table that was able to apply treasure enchantments (except Soul Speed, Swift Sneak, and Wind Burst), and where the chance of multiple enchantments is not reduced.
↑ ^{Jump up to: a} ^b Enchantment probabilities are the same as a level-10 to level-20 enchantment would be on an enchantment table that was able to apply treasure enchantments (except Soul Speed, Swift Sneak, and Wind Burst), and where the chance of multiple enchantments is not reduced.
↑ Enchanted with a random level of Breach, or Density.
↑ Enchanted with a random level of Knockback, Punch, Smite, Looting, or Multishot.
↑ Enchanted with level I of Wind Burst.

Polished tuff

Generates in trial chambers.
Can be crafted from tuff or can be obtained by cutting tuff using a stonecutter.
Can be used to craft their respective stairs, slabs, and walls.

Trial spawner

Generates in trial chambers.
The trial spawner is a new form of spawner that ejects rewards upon completion and can have variable levels of challenge in multiplayer.
The challenge level increases for each new player a trial spawner notices nearby.
- Challenge level does not decrease until it is reset during a trial spawner's cooldown.
Unlike monster spawners, a trial spawner spawns a limited number of mobs proportional to its current challenge level.
- It can spawn a mob only at positions that are within line of sight.
- It can spawn a mob regardless of any light level requirement the mob has.
- Spawned mobs are persistent and does not despawn.
Once all mobs are defeated, the trial spawner ejects a set of rewards proportional to the current challenge level.
- After the rewards have been ejected, the trial spawner goes into cooldown for 30 minutes during which it no longer spawns mobs.

In Java Edition and Bedrock Edition, each trial chambers trial spawner contains 1 item stack, with the following distribution:

Item	Stack Size ^[A]	Weight ^[B]	Chance ^[C]	Avg. per spawner ^[D]	[hide] Avg. # spawners to defeat ^[E]
Trial Key	1	¹⁰⁄₂₀	50.0%	0.500	2.0
Bread	1–3	³⁄₂₀	15.0%	0.300	6.7
Cooked Chicken	1	³⁄₂₀	15.0%	0.150	6.7
Baked Potato	1–3	²⁄₂₀	10.0%	0.200	10.0
Potion of Regeneration	1	¹⁄₂₀	5.0%	0.050	20.0
Potion of Swiftness	1	¹⁄₂₀	5.0%	0.050	20.0

↑ The size of stacks (or for unstackable items, number) of this item on any given roll.
↑ The weight of this item relative to other items in the pool.
↑ The odds of finding any of this item in a single chest.
↑ The number of items expected per chest, averaged over a large number of chests.
↑ The average number of chests the player should expect to search to find any of this item.

Trial spawners cannot be crafted nor obtained by players in Survival - instead, they can be found naturally placed throughout trial chambers.
Trial spawners are extremely slow to mine and resistant to explosions, and does not drop even with Silk Touch.
When placed in Creative, trial spawners have no mob type set by default.
- The mob type can be set by interacting with it while holding a spawn egg.
Players in Creative or Spectator mode are not detected or noticed by trial spawners.

Tuff bricks

Generates in trial chambers.
Can be crafted from polished tuff or can be obtained by cutting tuff using a stonecutter.
Can be used to craft a chiseled variant and a respective stairs, slabs and walls.

Tuff slab

Can be crafted from tuff or can be obtained by cutting tuff using a stonecutter.
Can be used to craft chiseled tuff.

Tuff stairs

Can be crafted from tuff or can be obtained by cutting tuff using a stonecutter.

Tuff wall

Can be crafted from tuff blocks or can be obtained by cutting tuff using a stonecutter.

Vault

A block containing loot that can be unlocked with trial keys, found throughout trial chambers.
- Using a trial key on a vault unlocks it, making it eject loot.
Can be unlocked by an unlimited amount of players.
- It can be activated once per player. After a player has unlocked a vault, they cannot unlock that vault again.
- If a player has not unlocked that vault before, an orange stream of particles flows from the player to the vault when nearby.
Has a keyhole that is open or closed depending on the players nearby.
- If any nearby player has not unlocked that vault, the keyhole is open.
- If all nearby players have unlocked that vault, the keyhole is closed.
Within its cage, it cycles through and display items that are possible to eject from its loot table.
The rewards it ejects are randomized from its loot table each time it is unlocked.
- The player gets no more than 1 unstackable item per vault.
- The player more often gets rewards that can stack together.

In Java Edition, each trial chambers vault and reward chest contains items drawn from 3 pools, with the following distribution:

Item	Stack Size ^[A]			Weight ^[B]			Chance ^[C]	Avg. per container ^[D]	[hide] Avg. # containers to loot ^[E]
Item	1×	1–3×	1×	1×	1–3×	1×	Chance ^[C]	Avg. per container ^[D]	[hide] Avg. # containers to loot ^[E]
Nothing^[F]	—	—	1	—	—	³⁶⁄₄₈	75.0%	0.750	1.3
Emerald	2–4	2–4	—	³⁹²⁄₂₈₇₅	⁴⁄₂₅	—	38.4%	1.369	2.6
Arrow	2–8	2–8	—	⁹²⁄₂₈₇₅	⁴⁄₂₅	—	31.0%	1.760	3.2
Arrow of Poison	2–8	2–8	—	⁹²⁄₂₈₇₅	⁴⁄₂₅	—	31.0%	1.760	3.2
Iron Ingot	1–4	1–4	—	⁶⁹⁄₂₈₇₅	³⁄₂₅	—	24.0%	0.660	4.2
Wind Charge	1–3	1–3	—	⁶⁹⁄₂₈₇₅	³⁄₂₅	—	24.0%	0.528	4.2
Honey Bottle	1–2	1–2	—	⁶⁹⁄₂₈₇₅	³⁄₂₅	—	24.0%	0.396	4.2
Ominous Bottle I - II^[G]	1	1	—	⁴⁶⁄₂₈₇₅	²⁄₂₅	—	16.5%	0.176	6.1
Damaged Shield^[H]	1	—	—	³⁰⁰⁄₂₈₇₅	—	—	10.4%	0.104	9.6
Enchanted Bow^[I]	1	—	—	³⁰⁰⁄₂₈₇₅	—	—	10.4%	0.104	9.6
Wind Charge	4–12	4–12	—	²³⁄₂₈₇₅	¹⁄₂₅	—	8.5%	0.704	11.7
Diamond	1–2	1–2	—	²³⁄₂₈₇₅	¹⁄₂₅	—	8.5%	0.132	11.7
Golden Apple	—	—	1	—	—	⁴⁄₄₈	8.3%	0.083	12.0
Golden Carrot	1–2	—	—	²⁰⁰⁄₂₈₇₅	—	—	7.0%	0.104	14.4
Enchanted Book^[J]	1	—	—	²⁰⁰⁄₂₈₇₅	—	—	7.0%	0.070	14.4
Enchanted Book^[K]	1	—	—	²⁰⁰⁄₂₈₇₅	—	—	7.0%	0.070	14.4
Enchanted Crossbow^[L]	1	—	—	²⁰⁰⁄₂₈₇₅	—	—	7.0%	0.070	14.4
Enchanted Iron Axe^[I]	1	—	—	²⁰⁰⁄₂₈₇₅	—	—	7.0%	0.070	14.4
Enchanted Iron Chestplate^[M]	1	—	—	²⁰⁰⁄₂₈₇₅	—	—	7.0%	0.070	14.4
Bolt Armor Trim Smithing Template	—	—	1	—	—	³⁄₄₈	6.2%	0.062	16.0
Music Disc (Precipice)	—	—	1	—	—	²⁄₄₈	4.2%	0.042	24.0
Guster Banner Pattern	—	—	1	—	—	²⁄₄₈	4.2%	0.042	24.0
Enchanted Diamond Axe^[I]	1	—	—	¹⁰⁰⁄₂₈₇₅	—	—	3.5%	0.035	28.7
Enchanted Diamond Chestplate^[I]	1	—	—	¹⁰⁰⁄₂₈₇₅	—	—	3.5%	0.035	28.7
Trident	—	—	1	—	—	¹⁄₄₈	2.1%	0.021	48.0

In Bedrock Edition, each trial chambers vault and reward chest contains items drawn from 3 pools, with the following distribution:

Item	Stack Size ^[A]			Weight ^[B]			Chance ^[C]	Avg. per container ^[D]	[hide] Avg. # containers to loot ^[E]
Item	1×	1–3×	1×	1×	1–3×	1×	Chance ^[C]	Avg. per container ^[D]	[hide] Avg. # containers to loot ^[E]
Nothing^[F]	—	—	1	—	—	³⁶⁄₄₈	75.0%	0.750	1.3
Emerald	2–4	2–4	—	⁴⁴³⁄₂₈₇₅	⁴⁄₂₅	—	39.7%	1.422	2.5
Arrow	2–8	2–8	—	³⁶⁸⁄₂₈₇₅	⁴⁄₂₅	—	37.8%	2.240	2.6
Arrow of Poison	2–8	2–8	—	³⁶⁸⁄₂₈₇₅	⁴⁄₂₅	—	37.8%	2.240	2.6
Iron Ingot	1–4	1–4	—	²⁷⁶⁄₂₈₇₅	³⁄₂₅	—	29.6%	0.840	3.4
Wind Charge	1–3	1–3	—	²⁷⁶⁄₂₈₇₅	³⁄₂₅	—	29.6%	0.672	3.4
Honey Bottle	1–2	1–2	—	²⁷⁶⁄₂₈₇₅	³⁄₂₅	—	29.6%	0.504	3.4
Ominous Bottle I - II^[G]	1	1	—	¹⁸⁴⁄₂₈₇₅	²⁄₂₅	—	20.6%	0.224	4.9
Wind Charge	4–12	4–12	—	⁹²⁄₂₈₇₅	¹⁄₂₅	—	10.7%	0.896	9.3
Diamond	1–2	1–2	—	⁹²⁄₂₈₇₅	¹⁄₂₅	—	10.7%	0.168	9.3
Golden Apple	—	—	1	—	—	⁴⁄₄₈	8.3%	0.083	12.0
Bolt Armor Trim Smithing Template	—	—	1	—	—	³⁄₄₈	6.2%	0.062	16.0
Music Disc (Precipice)	—	—	1	—	—	²⁄₄₈	4.2%	0.042	24.0
Guster Banner Pattern	—	—	1	—	—	²⁄₄₈	4.2%	0.042	24.0
Damaged Shield^[H]	1	—	—	⁷⁵⁄₂₈₇₅	—	—	2.6%	0.026	38.3
Enchanted Bow^[I]	1	—	—	⁷⁵⁄₂₈₇₅	—	—	2.6%	0.026	38.3
Trident	—	—	1	—	—	¹⁄₄₈	2.1%	0.021	48.0
Golden Carrot	1–2	—	—	⁵⁰⁄₂₈₇₅	—	—	1.7%	0.026	57.5
Enchanted Book^[J]	1	—	—	⁵⁰⁄₂₈₇₅	—	—	1.7%	0.017	57.5
Enchanted Book^[K]	1	—	—	⁵⁰⁄₂₈₇₅	—	—	1.7%	0.017	57.5
Enchanted Crossbow^[L]	1	—	—	⁵⁰⁄₂₈₇₅	—	—	1.7%	0.017	57.5
Enchanted Iron Axe^[I]	1	—	—	⁵⁰⁄₂₈₇₅	—	—	1.7%	0.017	57.5
Enchanted Iron Chestplate^[M]	1	—	—	⁵⁰⁄₂₈₇₅	—	—	1.7%	0.017	57.5
Enchanted Diamond Axe^[I]	1	—	—	²⁵⁄₂₈₇₅	—	—	0.9%	0.009	115.0
Enchanted Diamond Chestplate^[I]	1	—	—	²⁵⁄₂₈₇₅	—	—	0.9%	0.009	115.0

↑ ^{Jump up to: a} ^b The size of stacks (or for unstackable items, number) of this item on any given roll.
↑ ^{Jump up to: a} ^b The weight of this item relative to other items in the pool.
↑ ^{Jump up to: a} ^b The odds of finding any of this item in a single chest.
↑ ^{Jump up to: a} ^b The number of items expected per chest, averaged over a large number of chests.
↑ ^{Jump up to: a} ^b The average number of chests the player should expect to search to find any of this item.
↑ ^{Jump up to: a} ^b 'Nothing' does not refer to the chance of an empty chest. Instead, it refers to the chance that the random loot generator does not add any loot on a single roll.
↑ ^{Jump up to: a} ^b Ominous bottle level between I and II
↑ ^{Jump up to: a} ^b The item has between 50% and 100% of its total durability.
↑ ^{Jump up to: a} ^b ^c ^d ^e ^f ^g ^h Enchantment probabilities are the same as a level-5 to level-15 enchantment would be on an enchantment table that was able to apply treasure enchantments (except Soul Speed, Swift Sneak, and Wind Burst), and where the chance of multiple enchantments is not reduced.
↑ ^{Jump up to: a} ^b Enchanted with a random level of Mending, Riptide, Loyalty, Channeling, or Impaling.
↑ ^{Jump up to: a} ^b Enchanted with a random level of Sharpness, Bane of Arthropods, Efficiency, Fortune, Silk Touch, or Feather Falling.
↑ ^{Jump up to: a} ^b Enchantment probabilities are the same as a level-5 to level-20 enchantment would be on an enchantment table that was able to apply treasure enchantments (except Soul Speed, Swift Sneak, and Wind Burst), and where the chance of multiple enchantments is not reduced.
↑ ^{Jump up to: a} ^b Enchantment probabilities are the same as a level-0 to level-10 enchantment would be on an enchantment table that was able to apply treasure enchantments (except Soul Speed, Swift Sneak, and Wind Burst), and where the chance of multiple enchantments is not reduced.

Cannot be crafted or obtained in Survival, and does not drop anything when mined.
Explosion-resistant and cannot be moved.

Items

Arrow of Infestation

Gives the Infested effect.

Arrow of Oozing

Gives the Oozing effect.

Arrow of Weaving

Gives the Weaving effect.

Arrow of Wind Charging

Gives the Wind Charged effect.

Banner patterns

Added two new banner patterns that can be obtained by unlocking vaults.
- Flow banner pattern.
- Guster banner pattern.

Breeze rod

Dropped by the breeze.
Can be crafted into 4 wind charges.
Can be used with the heavy core to craft a mace.

Mace

A new melee weapon that can be crafted using a heavy core and a breeze rod.

Deals 6 damage, identical to that of a iron sword in Java Edition and a stone sword in Bedrock Edition.
Has an attack speed of 0.6, 40% slower than that of a golden, diamond, or netherite axe.
Attacking after having fallen at least 1.5 blocks performs a smash attack. The more blocks a player has fallen, the greater the damage of the smash attack.
- Successfully striking a target with a smash attack negates any damage accumulated from the fall, similar to how a wind charge works, as well as reseting all vertical momentum.
- Maces have a unique explosive particle effect when executing a smash attack.
- In addition to the normal unique smash attack sound, a different unique sound is played performing a smash attack from a fall of more than 5 blocks.
- Other entities near a smash-attacked target receives knockback, with a stronger effect when having fallen more than 5 blocks before attacking.
- Smash attacks activate the Wind Burst enchantment.
Can be repaired with breeze rods using an anvil.
Has three exclusive enchantments: Density, Breach, and Wind Burst.
Players can use a mace in combination with wind charges to launch up and deliver devastating smash attacks on their enemies.

Music discs

Added 3 new music discs, which play the following songs from Tricky Trials' official soundtrack:
- "Precipice" by Aaron Cherof
  - Can be found rarely in standard vaults.
  - Has a comparator output of 13 when played in a jukebox.
- "Creator" by Lena Raine
  - Can be found rarely in ominous vaults.
  - Has a comparator output of 12 when played in a jukebox.
- "Creator (Music Box)" by Lena Raine
  - Can be found rarely in decorated pots broken in trial chambers.
  - Has a comparator output of 11 when played in a jukebox.

Paintings

Added 20 new paintings by the artists Sarah Boeving and Kristoffer Zetterstrand:

Name	Size	Artist
Meditative	1x1	Sarah Boeving
Prairie Ride	1x2	Sarah Boeving
Baroque	2x2	Sarah Boeving
Humble	2x2	Sarah Boeving
Unpacked	4x4	Sarah Boeving
Bouquet	3x3	Kristoffer Zetterstrand
Cavebird	3x3	Kristoffer Zetterstrand
Cotán	3x3	Kristoffer Zetterstrand
Endboss	3x3	Kristoffer Zetterstrand
Fern	3x3	Kristoffer Zetterstrand
Owlemons	3x3	Kristoffer Zetterstrand
Sunflowers	3x3	Kristoffer Zetterstrand
Tides	3x3	Kristoffer Zetterstrand
Backyard	3x4	Kristoffer Zetterstrand
Pond	3x4	Kristoffer Zetterstrand
Changing	4x2	Kristoffer Zetterstrand
Finding	4x2	Kristoffer Zetterstrand
Lowmist	4x2	Kristoffer Zetterstrand
Passage	4x2	Kristoffer Zetterstrand
Orb	4x4	Kristoffer Zetterstrand

Ominous bottle

Can be consumed by players to give the Bad Omen effect for 100 minutes (120000 game ticks).
- Has 5 variations, one for each Bad Omen level.
- The bottle breaks when consumed.
- Can be stacked to 64.
Can be found uncommonly in any vaults that are unlocked with trial keys, and is dropped by raid captains when defeated outside a raid.

Ominous trial key

A variant of the trial key that can be obtained only by defeating an ominous trial spawner.
They can be used to unlock ominous vaults, but cannot unlock a vault.

Potion of Infestation

Brewed with an awkward potion and a stone block.
Gives the Infested effect.

Potion of Oozing

Brewed with an awkward potion and a slime block.
Gives the Oozing effect.

Potion of Weaving

Brewed with an awkward potion and a cobweb.
Gives the Weaving effect.

Potion of Wind Charging

Brewed with an awkward potion and a breeze rod.
Gives the Wind Charged effect.

Pottery sherds

Added three new pottery sherds that can be obtained only from decorated pots found in trial chambers.

Smithing templates

Added two new armor trims that can be obtained by vault and ominous vault loot drops.
- Bolt armor trim.
- Flow armor trim.

Spawn eggs

Trial explorer map

Can be traded from journeyman cartographers.
Points to a nearby trial chamber.

Trial key

A reward from the trial spawners after defeating mobs.
An item that can be obtained only from trial spawners and chests.
Trial keys are used to open up vault blocks.

Wind charge

The item form of the wind charge entity.
Can be crafted from breeze rods or can be obtained as a reward from vaults.

4

Can be shot from a dispenser or thrown by a player.
When used, it fires off a wind charge projectile similar to the breeze.
A wind charge fired by a player grants 10% more knockback than a breeze's, but have a much smaller area of impact.
Just like the projectile fired by the breeze, wind charges fired by the player also deal damage if they hit an entity directly, and they activate redstone components.
There is a half-second cooldown after each use.
Players that launch themselves with a wind charge accumulate fall damage only below the Y-level of where they collided with the wind burst.

Mobs

Bogged

A new, mossy and mushroom covered variant of the skeleton that shoots poisonous arrows.
- They're faster to take down with 16HP × 8 health instead of 20HP × 10 health.
- They attack at a slower interval of 3.5 seconds (70 game ticks) instead of skeletons' 2 seconds (40 game ticks).
Has a chance to drop arrows of Poison when killed by players.
The mushrooms on its head can be sheared to give 1-2 brown mushrooms and 1-2 red mushrooms.
They spawn naturally in swamps and mangrove swamps.
- They're somewhat rare, with their spawn chance being half of that of the skeleton.
- As opposed to strays and husks, bogged do not require sky access to spawn, and they can also spawn in caves.
Can also be found spawning from trial spawners in some trial chambers.

Breeze

The Breeze is a cunning, hostile mob that can spawn via trial spawners in some rooms within the trial chambers.
Has 30HP × 15 health points.
The Breeze moves primarily by leaping around the target, sometimes jumping quite long distances.
- Avoids jumping into dangerous blocks or air.
An aggressive adversary, the breeze shoots wind charge projectiles at its target.
- Wind charges deal a small amount of damage when colliding directly with an entity.
- After colliding with an entity or a block, wind charge projectiles produce a wind burst, which knocks back entities in the area by several blocks.
Wind bursts also have the effect of 'activating' certain blocks:
- Non-iron doors and trapdoors are flipped.
- Fence gates are flipped.
- Buttons are pressed.
- Levers are flipped.
- Bells are rung and swung.
- Lit candles (both standalone and on cake) are extinguished.
Wind bursts do not have any effect on iron doors, iron trapdoors, or any block being held in its position by a redstone signal.
Is aggressive toward iron golems in addition to players.
Does not retaliate against attacks from skeletons, strays, zombies, husks, spiders, cave spiders, and slimes. These mobs do not retaliate when damaged by a breeze.
Breezes deflect all projectiles.
- Deflected projectiles deflect in the direction of the shooter. Unlike a shield, projectiles retain their velocity after the deflection.
Drops 1-2 breeze rods when killed by a player.
- The number of breeze rods dropped is affected by Looting enchantment.

Non-mob entities

Wind charge

Fired by the breeze and players who use the wind charge item.
Explodes upon impact, emitting a large burst of gust particles and knocking entities back similar to a TNT explosion.
Its explosion interacts with certain blocks, including buttons and trapdoors.
Deals damage when colliding directly with a player or mob.
Wind charges break decorated pot and chorus flowers upon collision.
Can be deflected, just like fireballs.

World generation

Trial chambers

Trial chambers are a new structure in the Overworld where players can explore and take on combat challenges during the mid-game.
- Trial chambers are made out of a variety of copper and tuff blocks and can be found in different sizes from large to small.
- Trial chambers are fairly common under deepslate layers underground.
The layout of each trial chamber is procedurally generated, and can include traps, rewards, and a variety of combat spaces.
- Traps include dispensers containing different potential items, such as arrows or fire charges.
- Supply chests can be found between the different rooms, and give the player blocks and items that help them navigate their trials.
- Decorated pots generate around the trial chambers, and can be smashed open to find a little loot inside. Some pots are decorated and others are blank.
- Vaults and ominous vaults are guarded by combat challenges in most rooms, and require a trial key or ominous trial key to be opened. They can be a source of many high level enchanted books, consumables, and equipment.
- Some rooms include hidden areas that can contain chests, beds for players to set their respawn point, and vaults. Some also contain passageways that players can crawl through and lead to other rooms.
Each trial chamber includes trial spawners with a melee, small melee, or ranged category:

Trial spawner configuration

Gameplay

Advancements

Added eight new advancements.

Advancement	In-game description	Actual requirements (if different)
Blowback	Kill a Breeze with a deflected Breeze-shot Wind Charge	Kill a breeze by deflecting a wind charge that was shot by the breeze itself.
Crafters Crafting Crafters	Be near a Crafter when it crafts a Crafter	—
Lighten Up	Scrape a Copper Bulb with an Axe to make it brighter	Use any type of axe on a lit copper bulb that is at least partially oxidized.
Minecraft: Trial(s) Edition	Step foot in a Trial Chamber	—
Over-Overkill	Deal 50 hearts of damage in a single hit using the Mace	–
Revaulting	Use an Ominous Trial Key on an Ominous Vault	—
Under Lock and Key	Use a Trial Key on a Vault	—
Who Needs Rockets?	Use a Wind Charge to launch yourself upwards 8 blocks	—

Effects

Infested
- Affected entities have a 10% chance to spawn 1-2 silverfish when hurt.
- Silverfish spawn at the center of the entity's bounding box and fling out in the direction the entity is facing.
- Silverfish cannot get this effect.

Oozing
- Affected entities spawn two slimes upon death.
- Spawns only slimes in a given 5×5×5 area up to the maximum entity cramming count.
- Slimes cannot get this effect.

Raid Omen
- A variant that Bad Omen can transform into if the player enters a village.
- It has a duration of 30 seconds.
- Once the Raid Omen expires, a raid starts at the location where the player gained the Raid Omen.

Trial Omen
- A variant that Bad Omen can transform into if the player is within detection range of a trial spawner that is not ominous.
- The Trial Omen has a duration of 15 minutes multiplied by the transformed Bad Omen's level.
- Players that have Trial Omen are surrounded by ominous particles.

Weaving
- Affected entities spread 2-3 cobweb blocks upon death.
- Non-player entities with this effect can walk through cobweb at normal speeds.
- Players are affected by the movement buff through cobwebs, affecting 50% of their normal speed instead of 25%.

Wind Charged
- Affected entities emit a wind burst upon death.

Enchantments

Three new enchantments have been introduced that are unique to the mace. Each mace can have only one of these enchantments.
- Breach
  - Rare enchantment, accessible in the enchanting table and on enchanted books in loot.
  - Has 4 levels.
  - Reduces the effectiveness of the armor on the target. The armor's effectiveness is reduced by 15% per level.
- Density
  - Common enchantment, accessible in the enchanting table and on enchanted books in loot.
  - Has 5 levels.
  - Increases the damage dealt per block fallen with a mace, increasing by 0.5 per level.
- Wind Burst
  - Unique enchantment that can be found only in ominous vaults.
  - Has 3 levels.
  - Emits a burst of wind (like that of a wind charge) upon executing a mace smash attack on an entity, launching the attacker upward. It can be used to chain smash attacks together, and the strength of the launch increases per level.
  - Each level bounces the attacker higher up in the air: it bounces the player a further 7 blocks up per enchantment level, for 21 blocks at level 3.
  - The launch strength of Wind Burst is much stronger in Bedrock Edition than in Java Edition.

Music

Added 9 new background music tracks. These can all play on the title screens.

Where each music track can play
Music track	B	CG	DC	DD	FF	G	JP	LC	SP	SS	Every other biome	Title screens
"Deeper"	No	No	Yes	Yes	No	No	No	No	No	No	No	Yes
"Eld Unknown"	No	No	Yes	No	No	Yes	Yes	No	Yes	No	No	Yes
"Endless"	No	No	Yes	No	No	Yes	Yes	No	Yes	No	No	Yes
"Featherfall"	Yes	Yes	No	No	Yes	No	No	Yes	No	No	No	Yes
"komorebi"	No	No	No	No	No	No	No	No	No	No	Yes	Yes
"pokopoko"	No	No	Yes	No	No	Yes	Yes	No	No	Yes	No	Yes
"Puzzlebox"	No	No	No	No	No	No	No	No	No	No	Yes	Yes
"Watcher"	No	No	No	No	No	No	No	No	No	No	Yes	Yes
"yakusoku"	No	No	No	No	No	No	No	No	No	No	Yes	Yes

Every other biome means all of these biomes:

"Featherfall" can play in every "other" biome, but it also plays in the specific biomes listed above.

Ominous events

Bad Omen has been expanded to give access to an optional experience in the trial chambers.
These optional experiences accessed through Bad Omen are now known as ominous events.
- They are more challenging than usual, and are designed to shake up the experience in unique ways.
- Illager raids are an example of an existing ominous event.
Bad Omen is getting some changes with this redesign:
- It has a new, shadowy icon and a sound for being applied to the player.
- It no longer triggers a raid directly when entering a village.
  - Instead, it transforms into a Raid Omen variant with a duration of 30 seconds.
  - Once the Raid Omen expires, a raid starts at the location where the player gained the Raid Omen.
  - Like any other effect, players can drink a bucket of milk to clear the Raid Omen to prevent the raid from starting.
- It is no longer given to players that defeat a raid captain outside a raid.
  - Instead, players can gain access to Bad Omen by consuming a new ominous bottle.

General

Ambience

Added 4 new ambient cave sounds:


Name	Sound
Cave 20
Cave 21
Cave 22
Cave 23

Particles

Trial Spawner Detection
- Emitted by a trial spawner upon activation.
Ominous Trial Spawner Detection
- Emitted by a ominous trial spawner upon activation.
Gust / Small Gust Emitter / Large Gust Emitter
- Created in a large burst comparable to explosion particles when a wind charge explodes. The small emitter spawns a number of gust particles when a player wind charge explodes and the large emitter appears from a breeze wind charge.
Vault Connection
- Created when a player stands near a vault they are yet to unlock.

Changes

Blocks

Doors

Doors of different materials now default to being placed oriented together to form a double door instead of both being placed with the hinge on the same side of the block.

Piston

Lowered volume of sounds.
- This was done to address the sounds being too harsh and loud when used in redstone contraptions.

Sculk sensor and calibrated sculk sensor

Added frosted ice being placed by Frost Walker to the list of events that produce a "Block Placed" vibration (frequency 13).^{[more information needed]}

Items

Axe and shield

When a player with an axe in the main-hand and a shield in the off-hand performs a use action, the game now prioritizes holding up the shield over using the axe (to strip wood or scrape copper).

Banner pattern

Snout is now considered of Uncommon rarity.

Trident

Now considered of Epic rarity.
Its hover text is now purple.

Mobs

General

Animals now panic for 2 seconds after taking damage (down from 4).
Animals now panic based on the damage caused by predefined damage source types.

Pandas, wolves, and adult polar bears

Now panic only from cactus, freezing, fire, and lightning bolt damage.

Witch

Witches now always drop 4–8 redstone dust on death.
- This is to improve the viability of farms that utilize witch huts to obtain redstone dust.

Non-mob entities

Boats

Are now leashable.

End crystals

Are now immune to fire damage.

Primed TNT

A primed TNT can now travel through a nether portal.
After a primed TNT has gone through a nether portal, it can no longer destroy nether portal blocks.

World generation

Obsidian platform

When re-generated when a new player enters the end portal, instead of breaking all blocks 3 blocks above it the blocks are instead broken as if mined by a player, dropping the item and (if a container) all its contents.

Gameplay

Advancements

The bogged and the breeze now count for "Monster Hunter", and are now required for "Monsters Hunted".
Infested, Oozing, Weaving, and Wind Charged are now required for the "A Furious Cocktail" advancement.^[2]
Infested, Oozing, Raid Omen, Trial Omen, Weaving, and Wind Charged are now required for the "How Did We Get Here" advancement.^[3]
Flow and Bolt armor trims now grant the "Crafting a New Look" advancement.^[4]

Bad Omen

Icon texture has been changed to .
No longer automatically granted when killing a raid captain.
Now caused by drinking an ominous bottle.
Becomes Raid Omen if in a village or Trial Omen if near a non-ominous trial spawner.

Effect

Improved player attribute and effect handling.
- Custom set base attributes are now kept when respawning.
- Active effects and modifiers are kept when changing dimension or winning the game.

Enchantment

The "Burning Time" reduction effect of Fire Protection and "Knockback Resistance" effect of Blast Protection now stack from wearing several pieces.

Knockback

Projectile knockback is no longer dependent on the shooters position.
- Projectiles such as arrows and fireballs knock back in the direction they travel.
- Projectiles such as splash potions and fireworks knock back away from themselves.
- Projectiles shot by a dispenser also knock back.

General

Crash

The unit of memory sizes in crash reports is changed from "MB" to "MiB", while the way to compute the sizes is not changed.
Crash reports now includes the total sizes and available sizes of JNA temporary directory, netty native libraries' directory, LWJGL temporary directory and system temporary directory.

Credits

Have been updated.

Performance

When reading an already generated chunk from disk, surrounding chunks are no longer unnecessarily loaded, reducing memory and CPU overhead.
Improvements to the disconnection screen.
In some cases client stores detailed information about disconnection (similar to crash reports).
When that happens, new "Open Disconnection Report Directory" button is added to the disconnection screen.
When server provides link for bug reporting, it is also added as a button to the disconnection screen.

Portals

Ender pearls that are thrown through portals can now teleport players to a different dimension than the one they are currently in.
It is now possible to travel with rideable entities through portals.
- When riding entities through portals, the delay before teleporting is not applied.

Realms

Any member of a Realm can now upgrade a world
In the Realms main screen, all online players of a Realm are displayed
- When hovered, a tooltip is shown with each player's head and name

Social interactions

Added an attestation checkbox when submitting a player report.

Title screen

The Panorama was changed to showcase trial chambers.

Technical

Additions

Command format

Loot functions

Added set_ominous_bottle_amplifier loot function.
- Sets the ominous_bottle_amplifier component on the target item according to a number provider.
  - conditions: list of conditions to filter this function
  - amplifier: a number provider used to generate the ominous_bottle_amplifier component

Target selectors

Added @n entity selector, selecting the nearest entity.
- This functions as @e[sort=nearest,limit=1].
- Additional requirements may still be provided; for example: @n[type=pig] selects the closest pig.

General

Enchantments

lookup
- A Level-Based Value type that maps a list of values to specific levels, and applies a fallback if the level is greater than the number of values supplied.
- Fields:
  - values: A list of values indexed by level - 1 to apply, if present.
  - fallback: A fallback Level-Based Value to apply if the level is greater than the size of values.

Tags

Added the following biome tag:
- #has_structure/trial_chambers: contains #is_overworld.
Added the following block tags:
- #air: contains air, cave_air, and void_air
  - Contains all blocks that resemble air.
- #blocks_wind_charge_explosions: contains barrier, and bedrock
  - Controls which blocks are not impacted by the explosion when hit by wind charge.
- #mob_interactable_doors
Added the following damage type tags:
- #panic_causes: contains #panic_environmental_causes, arrow, dragon_breath, explosion, fireball, fireworks, indirect_magic, magic, mob_attack, mob_projectile, player_attack, player_explosion, sonic_boom, sting, thrown, trident, unattributed_fireball, wind_charge, wither, and wither_skull
  - Contains damage types that cause panic in passive animals, i.e. mobs that run away when attacked.
- #panic_environmental_causes: contains cactus, freeze, hot_floor, in_fire, lava, lightning_bolt, and on_fire
  - Contains damage types that cause panic in aggressive animals that can panic, i.e. mobs that retaliate when attacked (Wolves, Polar Bears (adults) and Pandas).
Added the following entity type tags:
- #can_turn_in_boats: contains breeze.
- #deflects_projectiles: contains breeze.
- #immune_to_infested: contains silverfish.
  - For entities that cannot receive the Infested mob effect.
- #immune_to_oozing: contains slime.
  - For entities that cannot receive the Oozing mob effect.
- #no_anger_from_wind_charge: contains bogged, breeze, skeleton, stray, zombie, husk, spider, cave_spider, and slime.
Added the following item tag:
- #enchantable/mace: contains mace.
Added the following structure tag:
- #on_trial_chambers_maps: contains trial_chambers.

Changes

Command format

/attribute

The uuid and name arguments have been replaced with a singular id argument.

General

Data pack

The pack format version is now 48.
Added new Music Disc items and loot table entries for the Music Discs.
Painting variants are now data-driven.
The item argument in the /give, /item, and /loot commands now supports removal of default components with ! prefix.
- e.g. /give @s diamond_pickaxe[!tool] gives a Diamond Pickaxe without the tool component.
Enchantments are now data-driven.
Enchantments that show up in the game are now controlled by Enchantment Providers.
Enchantment exclusivity is now controlled through tags.
Renamed directories; each directory that used the plural name of its element now matches registry name:

Old name	New name
`tags/items`	`tags/item`
`tags/blocks`	`tags/block`
`tags/entity_types`	`tags/entity_type`
`tags/fluids`	`tags/fluid`
`tags/game_events`	`tags/game_event`

Registry decorated_pot_patterns has been renamed to decorated_pot_pattern.
Added new configurable fields to jigsaw structures and single_pool_element types.
Added new placement modifier type fixed_placement to place features in a set of fixed positions.
Added new feature type end_platform for the obsidian platform in the End.

Enchantments

Enchantments are now set through data. An enchantment is a set of core properties like level ranges and cost together with some effects. Most effect types also support a set of conditions, making it possible to apply them only when certain criteria are met.
Enchantments can be added in the registry enchantment. All Vanilla Enchantments can be found in the vanilla datapack in the client and server jar files.
Fields:
- description: The name of the Enchantment when displayed in text represented as a Text Component.
- exclusive_set: The Enchantment(s) this Enchantment is exclusive with.
  - Two Enchantments can never co-exist on an item if either is in the other's exclusive set.
  - Specified as an Enchantment ID, a list of Enchantment IDs or an Enchantment Tag prefixed with #.
  - Optional - if omitted, the exclusive set is empty.
- supported_items: The item types that can have this Enchantment.
  - Item ID, list of item IDs or tag prefixed with #.
- primary_items: The item types for which this Enchantment shows up in Enchanting Tables and on traded equipment.
  - Item ID, list of item IDs or tag prefixed with #.
  - Must be a subset of supported_items.
- weight: How commonly the Enchantment appears, compared to the total combined weight of all available Enchantments.
  - Positive integer - higher values mean more common.
- max_level: The maximum level of the Enchantment.
  - All Enchantments range from level 1 to their maximum level.
  - Positive integer.
- min_cost, max_cost: describe the range of costs for this Enchantment in the Enchanting Table (and how much it returns when disenchanted).
  - Both min and max cost are described using a linear formula:
  - base: Base cost at level 1.
  - per_level_above_first: Added for each level over 1.
- anvil_cost: The fee taken for the Enchantment in the anvil.
  - Non-negative integer.
  - This value is halved when an Enchantment is added to a book.
  - The effective fee is multiplied by the level of the Enchantment.
- slots: A list of slot groups this Enchantment works in.
  - Each entry is one of any, hand, mainhand, offhand, armor, feet, legs, chest, head and body.
- effects: A map of effect components, as described below in the Effect Components section.
Attribute effects
- Fields:
  - name & uuid have been removed, replaced by id.
  - id: The namespaced ID of the attribute modifier to add.
    - This is postfixed with the slot name when the enchanted item is equipped in a slot.
    - Must be unique to avoid different enchantments (or other systems) interfering with each others.

Level-Based Values

Many effects of Enchantments depend on the level of the Enchantment. For these fields, a type called Level-Based Values is used. In their most basic form, Level-Based Values can be written as floating-point constants, which is interpreted as a value that isn't in fact level-based, the constant is used as-is for all levels.
If a Level-Based value is not a floating-point constant, it is an object with a type field, specifying one of the following types:
- linear
  - The most common type of Level-Based Value is a linear value. A linear Level-Based Value has two fields:
    - base: The base value added to all levels
    - per_level_above_first: Amount added for each level above the first one
  - In effect, a linear Level-Based Value results in $b a s e + p e r_l e v e l_a b o v e_f i r s t * (l e v e l - 1)$ .
- clamped
  - A Level-Based Value type that clamps a value between a min and max. Fields:
    - value: A Level-Based Value used as the input
    - min: A floating point value specifying the minimum value of the output
    - max: A floating point value specifying the maximum value of the output
- fraction
  - A Level-Based Value type that represents the fraction between two values. Fields:
    - numerator: A Level-Based Value used as the numerator
    - denominator: A Level-Based Value used as the denominator
- levels_squared
  - A Level-Based Value type that evaluates to the square of the levels, plus an addition. Fields:
    - added: A floating-point value added to the result of the squared levels
  - In effect, a levels_squared Level-Based Value results in $l e v e l^{2} + a d d e d$

Value Effect Types

Value Effects are effects used to manipulate the amount of something in the game.
- add
  - A Value Effect that adds a value to the processed results.
  - Fields:
    - value: A Level-Based Value determining how much to add
  - Negative values are supported
- all_of
  - A Value Effect that runs a number of other Value Effects, in order. This can be useful when the same set of conditions apply to a number of Value Effects.
  - Fields:
    - effects: A list of the Value Effects to run
- multiply
  - A Value Effect that multiplies the processed value by a given factor.
  - Fields:
    - factor: A Level-Based Value determining the factor to multiply in
- remove_binomial
  - A Value Effect that runs a Binomial series of checks, reducing the input value by 1 for every successful check.
  - Fields:
    - chance: A Level-Based Value representing the chance that an input value is dropped.
    - The span is 0 to 1, with 0 being no chance to drop an input value and 1 dropping all input values
- set
  - A Value Effect that overwrites the input value with a given Level-Based Value.
  - Fields:
    - value: The Level-Based Value to use as the result

Attributes

Attribute modifiers no longer have a UUID and name combination.
Instead, attribute modifiers are now uniquely identified by a namespaced ID, similar to other resources.
The ID of a modifier uniquely identifies it in the set of modifiers for a single attribute.
- Using the same ID for different modifiers is allowed as long as the modifiers are for different attributes.
Existing built-in modifiers are upgraded to new IDs.
Existing custom modifiers are upgraded to the GUID as an ID in the minecraft namespace.

Item Stack Attribute Modifiers

The uuid and name fields have been removed.
Attribute Modifiers now have an id (namespaced ID) field.
- This is a unique identifier per attribute for the modifier.

Entity Attributes

Attributes are now stored as attributes
Attribute format:
- id, renamed from Name.
- base, renamed from Base.
- modifiers, renamed from Modifiers.
  - Now stores modifiers in the same format as modifiers in attribute_modifiers item stack components:
    - id, replaces UUID and Name.
    - amount, renamed from Amount.
    - operation, renamed from Operation, now a named constant instead of an int:
      - add_value - previously 0.
      - add_multiplied_base - previously 1.
      - add_multiplied_total - previously 2.

Attribute Effects

Attribute effects use the Attribute system to apply an Attribute Modifier whenever the Enchanted Item is correctly equipped. Attribute effects do not have a dynamic type - they are all the same type.
Fields:
- name: The name of the Attribute Modifier to add
- attribute: The ID of the attribute to modify
- operation: The operation of the Attribute Modifier
  - One of add_value, add_multiplied_base and add_multiplied_total
- amount: A Level-Based Value describing the amount
- uuid: A string containing a UUID for the Attribute Modifier to use
  - Must be unique to avoid different Enchantments (or other systems) interfering with each others

Entity Effect Types

Entity Effects are Enchantment effects that generally do something to an Entity involved in an event. Which Entity is affected depends on the specific component being configured.
- all_of
  - An Entity Effect that runs a list of other Entity Effects. This can be useful when a set of conditions should apply to more than one Entity Effect.
  - Fields:
    - effects: List of Entity Effects to run
- apply_mob_effect
  - An Entity Effect that applies a random Mob Effect to the affected Entity, chosen from a set of options. The duration and amplifier are randomized within a given span. The effect of specifying larger maximum values than the minimum value is undefined.
  - Fields:
    - to_apply: Options for the Effect to apply
      - One of an Effect ID, a list of Effect IDs or an Effect Tag prefixed by #
    - min_duration, max_duration: Level-Based Values representing the minimum and maximum duration of the effect in seconds
    - min_amplifier, max_amplifier: Level-Based Values representing the minimum and maximum amplifier
- damage_entity
  - An Entity Effect that applies damage to the affected Entity. The amount of damage is randomized within a given span. The effect of specifying a larger maximum value than the minimum value is undefined.
  - Fields:
    - damage_type: The ID of the Damage Type to use
    - min_damage, max_damage: Level-Based Values representing the minimum and maximum amount of damage
- damage_item
  - An Entity Effect that applies damage to the Enchanted Item.
  - Fields:
    - amount: A Level-Based Value determining the amount of damage to apply
- explode
  - An Entity Effect that causes an explosion.
  - Fields:
    - attribute_to_user: A boolean deciding whether the explosion should be attributed to the user of the enchanted tool
    - damage_type: Optional damage type of the explosion - if omitted, no damage is dealt by the explosion
    - immune_blocks: Optional Block, list of Blocks or hash-prefixed Block Tag specifying which blocks fully block the explosion
    - knockback_multiplier: A Level-Based Value deciding the knockback multiplier caused by the explosion - if omitted, the default explosion knockback is applied
    - offset: A position offset for where the explosion is spawned
      - Format: list of 3 integers representing X, Y and Z offset
      - Optional, if omitted [0, 0, 0] is used
    - radius: A Level-Based Value representing the radius of the explosion
    - create_fire: A boolean for whether the explosion causes fire to be placed or not
    - block_interaction: How the explosion interacts with blocks. One of:
      - none: No effect
      - block: Act as if a block caused the explosion - the blockExplosionDropDecay game rule applies to drops
      - mob: Act as if a mob caused the explosion - the mobExplosionDropDecay game rule applies to drops
      - tnt: Act as if TNT caused the explosion - the tntExplosionDropDecay game rule applies to drops
      - trigger: Trigger redstone-activated blocks
    - small_particle: The small particle emitted by the explosion
    - large_particle: The large particle emitted by the explosion
    - sound: The sound event caused by the explosion
- ignite
  - An Entity Effect that ignites the affected Entity for a given number of seconds.
  - Fields:
    - duration: A Level-Based Value specifying the number of seconds the fire should last
- play_sound
  - An Entity Effect that plays a sound.
  - Fields:
    - sound: A Sound Event ID for the sound to play
    - volume: A Float Provider between 0.00001 and 10.0 specifying the volume of the sound
    - pitch: A Float Provider between 0.00001 and 2.0 specifying the pitch of the sound
- replace_block
  - An Entity Effect that replaces a block in the world.
  - Fields:
    - block_state: A block state provider giving the block state to set
    - offset: A positional offset from the position of the event to where to place the block
      - Format: list of 3 integers representing X, Y and Z offset
      - Optional, if omitted [0, 0, 0] is used
    - predicate: A World-generation style Block Predicate to used to determine if the block should be replaced
      - Optional, if omitted all block types are replaced
- replace_disk
  - An Entity Effect that replaces blocks in a disc / cylinder in the world.
  - Fields:
    - block_state: A block state provider giving the block state to set
    - radius: A Level-Based Value describing the radius of the cylinder
    - height: A Level-Based Value describing the height of the cylinder
    - offset: A positional offset from the position of the event to the center of the cylinder
      - Format: list of 3 integers representing X, Y and Z offset
      - Optional, if omitted [0, 0, 0] is used
    - predicate: A World-generation style Block Predicate to used to determine if the block should be replaced
      - Optional, if omitted all block types are replaced
- run_function
  - An Entity Effect that runs a Command Function. The execution entity the effect is executing for is represented as @s and ~ ~ ~ is the position of the event.
  - Fields:
    - function: Namespaced ID of the Command Function to run
- set_block_properties
  - An Entity Effect that sets properties on a block
  - Fields:
    - properties: map of property key to property value (same format as a minecraft:block_state item component)
    - offset: A positional offset from the position of the event to the center of the cylinder
      - Format: list of 3 integers representing X, Y and Z offset
    - Optional, if omitted [0, 0, 0] is used
- spawn_particles
  - An Entity Effect that spawns particles around the affected Entity.
  - Fields:
    - particle: A particle type definition
    - horizontal_position, vertical_position: Decides where the particle spawns horizontally and vertically. Objects with fields:
      - type: Specifies the position selectiont type. One of:
        entity_position: Spawn particles based on the entity position
        
        in_bounding_box: Spawn particles based on randomized positions inside the bounding box of the entity
      - offset: A floating point value specifying an offset to the position source
        Optional, interpreted as 0 if omitted
      - scale: A floating point value specifying a scaling factor
        Only available if type is in_bounding_box
      - Optional, interpreted as 1 if omitted
    - horizontal_velocity, vertical_velocity: Decides the initial velocity of the spawned particle. Object with fields:
      - base: A Float Provider giving the base speed along the given axis
        Optional, interpreted as 0 if omitted
      - movement_scale: A floating point scale factor applied to the Entity speed along the given axis
        Optional, interpreted as 0 if omitted
        
        Example: a movement_scale of 1 adds the velocity of the Entity to the spawned particles
- summon_entity
  - An Entity Effect that summons a new Entity, randomly chosen from a set of Entity Types, at the site of the event.
  - Fields:
    - entity: The options for the Entity Type to summon
      - Either an Entity Type ID, a list of Entity Type IDs or an Entity Type Tag prefixed with #
    - join_team: Boolean that specifies whether the summoned Entity should join the team of the owner of the Enchanted Item
- damage_item.
- The damage is not applied to items held by players in creative mode.
  - Hit block parameters.
    - Entities: this.
    - Enchantment level.
    - Origin.
    - Block state.

Location-Based Effect Types

Location-Based Effects are special effects that activate and deactivate depending on where the owner of the Enchanted Item moves. Location-Based Effects trigger only when such items are initially equipped and subsequently when the owning Entity moves to a new space in the Block grid - i.e. when their coordinates change to a new integer value.
All Entity Effect types can also be used as Location-Based Effects, and in addition attribute can be used to specify an Attribute Effect as a location-based effect.

Effect Conditions

Most Enchantment effects are filtered using Conditions (same types as in loot tables). This enables effects to be specific for different situations. Each Effect Component defines which parameters are available for the condition to evaluate - some parameters are available for all of these parameter sets, while some are specific to a certain set. Each effect component specifies which parameters are available in the Effect Components list below.

Damage Parameters
- Entities: this, attacker, direct_attacker
- Enchantment Level
- Origin
- Damage Source

Item Parameters
- Tool
- Enchantment Level

Location Parameters
- Entities: this
- Enchantment Level
- Origin
- Enchantment Active status

Entity Parameters
- Entities: this
- Enchantment Level
- Origin

Effect Components

The effects field in an Enchantment is a map of Effect Component type the Effect List data. Most Effect Components are lists, so any number of Effects can be added of any Component Type. The data for each effect generally involves having a specified condition context and Effect Type, but some Effects also deviate from this format.
In cases where the documentation specifies a Condition Context and Effect, the Component is a list. Each entry in the list has a field named effect with the effect of the type used by the list. Entries can also optionally include a field named requirements specifying the condition parameters, which are then evaluated with the documented context.
- minecraft:armor_effectiveness: Effects for changing the armor effectiveness of the target of an attack
  - Condition Context: Damage Parameters
  - Effect: Value Effect on the armor effectiveness: 0 for completely ineffective, 1 for fully effective
- minecraft:attributes: Unfiltered list of Attribute Effects.
- minecraft:ammo_use: Effects for ammunition being used when drawing a projectile weapon (firing a Bow or loading a Crossbow)
  - Condition Context: Item Parameters - Tool is the ammunition item
  - Effect: Value Effect on the amount of ammunition being used up
- minecraft:block_experience: Effects for the amount of experience that drops when mining a block with the Enchanted Item
  - Condition Context: Item Parameters - Tool is the mining tool used
  - Effect: Value Effect on the amount of experience awarded
- minecraft:crossbow_charging_sounds: Effect for changing the charging sounds of a Crossbow
  - Note: Only one of these effects can ever be active - the highest level is picked
  - Format: A list of Crossbow sound banks:
    - start: Optional sound event id for the start of charging
    - mid: Optional sound event id for the middle of charging
    - end: Optional sound event id for the end of charging
  - Each entry in the list represents the sounds at one level of the Enchantment, so the first entry represents the sounds used by a level 1 Enchantment
- minecraft:crossbow_charge_time: Effects for the charging time of a Crossbow
  - Condition Context: Item Parameters - Tool is the Crossbow
  - Effect: Value Effect on the charge time of the Crossbow in seconds
- minecraft:damage: Effects for the amount of damage caused by an attack
  - Condition Context: Damage Parameters
  - Effect: Value Effect on the amount of damage
- minecraft:damage_immunity: Effects for complete damage immunity
  - Condition Context: Damage Parameters
  - Effect: Not specified - any matching entry causes damage immunity
- minecraft:damage_protection: Effects for damage protection
  - Condition Context: Damage Parameters
  - Effect: Value Effect on the amount of damage protection
  - Note that this adds damage protection ("magical armor") rather than processing the damage itself
- minecraft:equipment_drops: Effects for the chance of equipment dropping when a target is killed by the owner of the Enchanted Item
  - Condition Context: Damage Parameters
  - Effect: Value Effect on the chance between 0 and 1 of an equipped piece dropping
  - Also has one other field:
    - enchanted: A specifier for who needs to be enchanted for the effect to apply
    - Possible values are attacker and victim
- minecraft:fishing_luck_bonus: Effects for the amount of luck given to a player fishing
  - Condition Context: Entity Parameters - this is the player fishing
  - Effect: Value Effect on the amount of luck
  - Note: The total amount of luck (in integer form) is applied as a luck effect to the fishing loot table
- minecraft:fishing_time_reduction: Effects for reducing the time until a fish bites when fishing
  - Condition Context: Entity Parameters - this is the player fishing
  - Effect: Value Effect on the amount of time saved in seconds
  - Note: Higher values here mean less time until a fish bites
- minecraft:hit_block: Effects applying after a weapon or tool hits a Block
  - Condition Context: Entity Parameters - this is the entity hitting the Block
  - Effect: Entity Effect on the entity hitting the Block
  - Note: In the case of a projectile attack, this is the projectile
- minecraft:knockback: Effects for the amount of knockback caused by an attack
  - Condition Context: Damage Parameters
  - Effect: Value Effect on the amount of knockback caused by the attack
- minecraft:item_damage: Effects for the amount of durability lost when an item is damaged
  - Condition Context: Item Parameters - Tool is the damaged item
  - Effect: Value Effect on the amount of damage to the item
- minecraft:location_changed: Effects that take effect when an entity crosses into a new block position
  - Condition Context: Location Parameters
  - Effect: Location Based Effect
- minecraft:mob_experience: Effects for the amount of experience that drops when killing a mob with the Enchanted Item
  - Condition Context: Entity Parameters - this is the killed Mob
  - Effect: Value Effect on the amount of experience awarded
- minecraft:post_attack: Effects applying after an attack damages a target
  - Condition Context: Damage Parameters
  - Effect: Entity Effect
  - Also has two other fields:
    - enchanted: A specifier for who needs to be enchanted for the effect to apply
    - affected: A specifier for whom the effect is applied to
  - Possible values for both fields are attacker, damaging_entity and victim
  - Example, a Fire Aspect Enchant would specify that when the attacker is enchanted, the ignite effect is applied, and the affected party is the victim
- minecraft:prevent_armor_change: Effect for preventing the enchanted item from being unequipped from an armor slot
  - Format: Empty object
- minecraft:prevent_equipment_drop: Effect for preventing the enchanted item from being dropped on owner death
  - Format: Empty object
- minecraft:projectile_count: Effects for the amount of projectiles drawn when using a projectile weapon
  - Condition Context: Entity Parameters - this is the entity drawing the weapon
  - Effect: Value Effect on the number of projectiles drawn
- minecraft:projectile_piercing: Effects for the piercing count of projectiles fired from a projectile weapon, i.e. the number of targets it can hit
  - Condition Context: Item Parameters - Tool is the ammunition item
  - Effect: Value Effect on the pierce count of the fired projectile
- minecraft:projectile_spread: Effects for the spread of arrows from a projectile weapon firing multiple projectiles
  - Condition Context: Entity Parameters - this is the Entity using the Weapon
  - Effect: Value effect on the maximum spread of projectiles measured in degrees from the aim line
- minecraft:projectile_spawned: Effects applying after a projectile entity has been spawned when firing a projectile weapon
  - Condition Context: Entity Parameters - this is the projectile Entity
  - Effect: Entity Effect on the projectile Entity
- minecraft:repair_with_xp: Effect for repairing the item with xp when picked up by the player - any effect present triggers the function
  - Condition Context: Item Parameters - tool is the item being repaired
  - Effect: Value Effect converting the amount of XP to the amount of durability to repair
- minecraft:smash_damage_per_block_fallen: Effects for the amount of damage caused by a Mace's smash attack
  - Condition Context: Damage Parameters
  - Effect: Value Effect on the amount of damage
- minecraft:tick: Effects that apply every tick for correctly equipped Enchanted Items
  - Condition Context: Entity Parameters - this is the owner of the Enchanted Item
  - Effect: Entity Effect on the owner of the Enchanted Item
- minecraft:trident_return_acceleration: Effects for the special acceleration value of a Trident that returns it to its owner
  - Condition Context: Entity Parameters - this the Trident Entity
  - Effect: Value Effect on the acceleration value
- minecraft:trident_spin_attack_strength: Effects for the strength of a Trident used as a spin attack
  - Condition Context: Entity Parameters - this is the Player holding the Trident
  - Effect: Value Effect on the attack strength
  - Any resulting value greater than 0 converts the Trident to be a spin attack weapon instead of a thrown attack
- minecraft:trident_sound: Effect for changing the charging sounds of a Trident attack
  - Note: Only one of these effects can ever be active - the highest level is picked
  - Format: A list of sound events
  - Each entry in the list represents the sound at one level of the Enchantment, so the first entry represents the sound used by a level 1 Enchantment
- minecraft:hit_block:
  - Condition context: changed to take a hit block parameter - this is the entity hitting the block.

Effect conditions

Unlike with loot tables, all effect conditions now need to be inline objects and cannot be references.

Enchantment Providers

Enchantment Providers are new ways for the game to source Enchantments to use in various situations where Enchantments show up.

Spawn Equipment Enchantment Providers
- mob_spawn_equipment: Enchantment provider for mobs that spawn with randomly Enchanted equipment
- pillager_spawn_crossbow: Enchantment provider for Pillagers that spawn with Enchanted Crossbows
- raid/pillager_post_wave_3: Enchantment provider applied as a buff on the Crossbow of Pillagers spawning as waves 4 and 5
- raid/pillager_post_wave_5: Enchantment provider applied as a buff on the Crossbow of Pillagers spawning as waves above 5
- raid/vindicator: Enchantment provider applied as a buff on the Axe of a Vindicator spawning as wave 1-5
- raid/vindicator_post_wave_5: Enchantment provider applied as a buff on the Axe of a Vindicator spawning as waves above 5

Enderman Loot Enchantment Provider
- enderman_loot_drop: An Enchantment provider used for the "fake tool" applied to the carried block of a killed Enderman

Villager Trade Rebalance Enchantment Providers
- All Equipment-specific Enchantments in Villager trades in the Villager Trade Rebalance experiment are now sourced from Enchantment Providers.
- These Enchantment Providers are used only when the Villager Trade Rebalance experiment is enabled and all have the following pattern:
  - trades/<biome>_<profession>_<equipment>_<level>
- For example: trades/desert_armorer_helmet_4 and trades/taiga_armorer_chestplate_5.

Enchantment Provider Types

single_enchantment
- An Enchantment Provider that always provides the same Enchantment. The level of the Enchantment can be either constant or randomized.
- Fields:
  - enchantment: Namespaced ID of the Enchantment
  - level: Int provider representing the level of the Enchantment

enchantments_by_cost
- An Enchantment Provider that gives one or more Enchantments from a set of options according to a given cost (similar to the cost value in the Enchantment Table).
- Fields:
  - enchantments: The set of Enchantments as either a single Enchantment, a list of Enchantments or hash-prefixed Enchantment Tag
  - cost: Int provider representing the cost to use for the Enchanting process

enchantments_by_cost_with_difficulty
- An Enchantment Provider that works like enchantments_by_cost, but where the cost is calculated partially based on the local difficulty of the area where the event happens causing the Enchantments to be added.
- The used cost is a minimum cost plus a uniformly randomized factor up to a base cost span multiplied with the special factor, which starts at 0 for local difficulty up to 2, increases linearly up to 1 for local difficulty 4 and stays at a constant value of 1 for any difficulty above that.
- Fields:
  - enchantments: The set of Enchantments as either a single Enchantment, a list of Enchantments or hash-prefixed Enchantment Tag
  - min_cost: Positive integer representing the minimum possible cost
  - max_cost_span: Non-negative integer representing the span of the cost randomization when the special factor is at its maximum

Damage Types

New damage type: campfire, split from in_fire

Tags

Enchantment Tags
- Enchantment Functionality Tags
  - curse: Enchantments that get listed in red in tooltips and cannot be removed by disenchanting
  - prevents_bee_spawns_when_mining: Enchantments that allow a tool to mine bee nests and hives with the bees still inside
  - prevents_decorated_pot_shattering: Enchantments that make a tool not shatter decorated pots
  - prevents_ice_melting: Enchantments that cause a tool to not break Ice into Water
  - prevents_infested_spawns: Enchantments that allow a tool to break Infested blocks without causing the mob inside to spawn
  - smelts_loot: Enchantments that cause loot drops to be smelted
- Enchantment Availability Tags
  - tradeable: Enchantments that show up on Books in Villager trades
  - on_traded_equipment: Enchantments that show up on enchanted equipment in Villager trades
  - double_trade_price: Enchantments that double the Emerald cost when traded
  - in_enchanting_table: Enchantments that can show up in the Enchanting Table
  - on_mob_spawn_equipment: Enchantments that can show up on equipment worn by randomly spawned Mobs
  - on_random_loot: Enchantments that can show up on loot in loot chests found in the world
- Enchantment Exclusivitity Tags
  - New tags used by the Vanilla Enchantments to control which ones are mutually exclusive, all of which are found under the exclusive_set/ path.
    - armor: Enchantments that cannot co-exist on Armor pieces
    - boots: Enchantments that cannot co-exist on Boots
    - bow: Enchantments that cannot co-exist on Bows
    - crossbow: Enchantments that cannot co-exist on Crossbows
    - damage: Damage-increasing Enchantments that cannot co-exist
    - mining: Mining-related Enchantments that cannot co-exit
    - riptide: Enchantments that cannot co-exist with Riptide
- Trade Rebalance Enchantment Tags
  - In the experimental trade_rebalance pack, each biome type has two tags:
    - trades/<biome>_common: Contains Enchantments traded on the lower profession levels
    - trades/<biome>_special: Contains Enchantments traded on the highest profession level
Some registry types that used legacy datapack directory names (based on plural name of element) have been renamed to match registry name.
- Affected directories:
  - structures -> structure
  - advancements -> advancement
  - recipes -> recipe
  - loot_tables -> loot_table
  - predicates -> predicate
  - item_modifiers ->item_modifier
  - functions -> function
  - tags/functions -> tags/function

Damage Type Tags
- burn_from_stepping: Damage types that represent burning damage from stepping on something - in particular, damage types countered by the frost_walker Enchantment

Loot tables

Conditions
- Targets
  - Some target entity names have been renamed to fit in a more generic context:
    - killer is now called attacker
    - direct_killer is now called direct_attacker
    - killer_player is now called attacking_player

enchantment_active_check
- New condition, requires the "Enchantment Active" parameter to exist in the context, which currently means it works only in Enchantment conditions.
- Fields:
  - active: boolean determining whether the check should match for an active (true) or inactive (false)

random_chance
- The chance field is now a Number Provider

random_chance_with_enchanted_bonus
- Renamed from random_chance_with_looting. Field changes:
  - looting_multiplier: field has been removed
  - enchantment: new field containing the namespaced ID of the Enchantment that grants the bonus chance
  - chance field has been removed.
  - unenchanted_chance: a new field for the chance for an unenchanted item.
  - enchanted_chance: a new field for the chance for an enchanted item; a level-based value.

Functions

enchanted_count_increase
- Renamed from looting_enchant. Now has a new field:
  - enchantment: Namespaced ID of the Enchantment that increases yields

enchant_randomly
- Changed format - the enchantments field is now called options
  - options is now specified as one of an Enchantment, a list of Enchantments or an Enchantment Tag (prefixed with #)
  - only_compatible: New optional boolean field - if true, allows only enchantments that are compatible with the item
    - If omitted, defaults to true
    - Note: Books are considered compatible with all Enchantments

enchant_with_levels
- The treasure field has been removed
- Changed format - options is now specified as one of an Enchantment, a list of Enchantments or an Enchantment Tag (prefixed with #)

copy_name
- Some of the possible values for the source field have changed:
  - killer renamed to attacking_entity
  - killer_player renamed to last_damage_player

Number Providers

enchantment_level
- A new number provider that sources values from the Enchantment Level parameter.
- Fields:
  - amount: A Level-Based Value giving a value based on the level of the Enchantment

Predicates

New item sub-predicate available as jukebox_playable.
- Matcher for jukebox_playable component (like music discs).
- Fields:
  - song - optional id, list of ids or tag for jukebox song to be matched.

Enchantment Predicate
- The enchantment field has been removed
- Added an enchantments field, one of an Enchantment, a list of Enchantments or an Enchantment Tag (prefixed with #)
  - If multiple Enchantments are specified through a list or a tag, the Predicate matches if any Enchantment matches
- If no enchantments field is specified, any enchantment matching levels succeeds the test
- If neither the levels nor enchantments fields are defined, the predicate matches an item that has any enchantment

Entity Flags Predicate

New possible fields:
- is_on_ground: Optional boolean - if provided, matches the "on ground" state of the entity
- is_flying: Optional boolean - if provided, matches whether the entity is flying, including:
  - Gliding with Elytra
  - Flying in Creative Mode

Location Predicate

New possible fields:
- can_see_sky: Optional boolean - if provided, matches exactly when the location has the maximum possible level of sky light
- weather: Optional enumerated value, matching the weather in the location's dimension. One of:
  - clear
  - raining
  - thunder

Movement Predicate

New sub-predicate available as movement in Entity Predicates. Possible fields:
- x, y, z: min/max limits for movement speed along a certain axis in blocks / second
- speed: min/max limits for overall movement speed in blocks / second
- horizontal_speed: min/max limits for the horizontal speed component of the Entity's movement in blocks / second
- vertical_speed: min/max limits for the vertical speed component of the Entity's movement in blocks / second
- fall_distance: min/max limits for the fall distance of the Entity in blocks

Player Predicate
- The gamemode field has been changed to accept a list of gamemodes

Periodic Ticks

New Entity sub-predicate available as periodic_tick in Entity Predicates. Format: a positive integer.
- This sub-predicate is true every n ticks of an Entity's lifetime.

Attributes

generic.attack_knockback
- Now also works on Players.

generic.burning_time
- A factor to how long an Entity remains on fire after being ignited. A factor of 0 removes the entire burn time, a factor of 1 lets the Entity burn the default fire time - larger values increase the amount of time the entity remains on fire.
  - Default: 1
  - Minimum: 0
  - Maximum: 1024

generic.explosion_knockback_resistance
- A factor to how much knockback an Entity takes from an Explosion. A factor of 1 removes the entire knockback, a factor of 0 means no knockback reduction.
  - Default: 0
  - Minimum: 0
  - Maximum: 1

player.mining_efficiency
- Mining speed factor added to the speed of mining when using a tool that efficiently mines a block.
  - Default: 0
  - Minimum: 0
  - Maximum: 1024

generic.movement_efficiency
- How efficiently the entity can move through impeding terrain that slows down movement. A factor of 1 removes all movement penalty, a factor of 0 applies full movement penalty.
  - Default: 0
  - Minimum: 0
  - Maximum: 1

generic.oxygen_bonus
- Factor to the chance an Entity has to not use up air when underwater. 0 has no effect, values over 0 are used in the following formula to determine the chance of using up air: 1/(oxygen_bonus+1)
  - Default: 0
  - Minimum: 0
  - Maximum: 1024

player.sneaking_speed
- The movement speed factor when sneaking. A factor of 1 means sneaking is as fast as walking, a factor of 0 means unable to move while sneaking.
  - Default: 0.3
  - Minimum: 0
  - Maximum: 1

player.submerged_mining_speed
- The mining speed factor when submerged. A factor of 1 means mining as fast submerged as on land, a factor of 0 means unable to mine while submerged. Note that this represents only the submersion factor itself, and other factors(such as not touching the ground) also apply.
  - Default: 0.2
  - Minimum: 0
  - Maximum: 20

player.sweeping_damage_ratio
- How much of the base attack damage that gets transferred transfer to secondary targets in a sweep attack. This is additive to the base attack of the sweep damage itself of 1. A value of 0 means none of the base attack damage is transferred (sweep damage is 1). A value of 1 means all of the base attack damage is transferred (sweep damage is attack_damage+1)
  - Default: 0
  - Minimum: 0
  - Maximum: 1

generic.water_movement_efficiency
- The movement speed factor when submerged. The higher, the more of the underwater movement penalty is mitigated. Note that this represents only the submersion factor itself, and other factors (such as not touching the ground) also apply.
  - Default: 0
  - Minimum: 0
  - Maximum: 1

Block Predicates (World Generation Style)

unobstructed
- New block predicate type that passes if the selected block is unobstructed (no Entities are in the space of the block).
- Fields:
  - offset: List of 3 int offset coordinates, specifying the offset from the origin position to test
    - Optional, defaults to [0, 0, 0] if unspecified

Damage Type Predicate

New option: is_direct - optional boolean.
- When present, true requires the damage to be direct and false requires the damage to be indirect.
- Damage is direct when its direct and source entities are the same.

Entity Data

Projectiles
- Arrow-like projectile data now contains a weapon field containing an Item Stack representing the weapon the projectile was fired from. The following fields have been removed:
  - ShotFromCrossbow

Entity Effect Types

Adds optional field trigger_game_event for effect types replace_block, replace_disk and set_block_properties.
- Game event ID for a game event to trigger when a block has been replaced.

Custom structure

New NBT tag dimension_padding for structures.
- Ensures that a structure is not generating through the edges of a dimension by adding vertical padding to its bounding box.
- Default is 0.
- Trial Chambers have a padding of 10 since they are generated deep underground and would sometimes intersect with Bedrock layer.
- It is an object with fields:
  - bottom the vertical padding at the bottom of the dimension, non-negative integer
  - top the vertical padding at the top of the dimension, non-negative integer
- Can be written as a single non-negative integer instead to be applied to both top and bottom fields
  - e.g. both dimension_padding: 10 or dimension_padding: { bottom: 10, top: 5 } are valid
Data-driven enchantment field weight now has an upper bound of 1024
Data-driven enchantment field max_level now has an upper bound of 255
New entity sub predicate movement_affected_by - optional Location Predicate
- When present, adds requirements on a block at most 0.5 blocks below the entity that can affect its movement.

Data component format

The custom_data component can now be specified as an SNBT string to preserve type information in JSON.
- This is the same as is used in the set_custom_data loot function and custom_data predicate.
The food item component has new fields:
- using_converts_to: item with components (optional).
  - Once consumed, the food item is replaced with the specified item.
  - e.g. food={nutrition:1,saturation:0,using_converts_to:{id:"poisonous_potato",components:{"minecraft:custom_name":'"Wait what?"'}}}.

Debug

The game now stores reports from failed chunks' loads and saves in the debug directory.

Entity format

Removed power NBT tag and replaced with acceleration_power tag with a number value that control the projectile's acceleration (and maximum speed).
- This change affects the following projectiles; dragon_fireball, large_fireball, small_fireball, fireball, breeze_wind_charge, wind_charge, wither_skull.

Item component

Added the jukebox_playable item component.
- If set, the item can be inserted into jukeboxes to play a song.
- Format: object with fields.
  - song: jukebox song id.
    - The song to be played by the jukebox when this item stack is inserted.
  - show_in_tooltip: boolean (default: true).
    - If false, the name of the song is not shown in the tooltip.
    - This was formerly controlled by the hide_additional_tooltip component on music discs.
  - e.g. jukebox_playable={song:'minecraft:precipice'} jukebox_playable={song:'minecraft:precipice', show_in_tooltip:false}.

Jukebox

Added a jukebox song registry that is loaded from data packs.
Path to jukebox song definition is data/<namespace>/jukebox_song/<id>.json.
Fields in definition:
- sound_event - sound event that is streamed when played by a jukebox.
- description - the name of the song that is displayed in the hover tooltip represented as a text component.
- length_in_seconds - length of the song in seconds as a positive float.
- comparator_output - the redstone signal output by a comparator when played in a jukebox, between 0 and 15.

Painting variants

Improved support for custom paintings.
Painting variants registry are now loaded from packs.
- Path to painting definition is data/<namespace>/painting_variant/<id>.json
- Fields in definition:
  - width - width of painting in blocks, between 1 and 16.
  - height - height of painting in blocks, between 1 and 16.
  - asset_id - id of sprite in paintings atlas.

Reporting

Report data generator now includes information about network packets.

Resource pack

The pack format version is now 34.
- Added new textures and music assets for music discs.
- The sound events for ominous trial spawner becoming active and ambient sound were renamed.
Added entity models and textures for experimental breeze mob:
- breeze, wind_charge.
Added shader:
- breeze_wind.

Server

Pause menu now can include a list of links provided by server.
Server can now provide list of links to client.
Servers can add custom details to crash and disconnection reports.
New clientbound packet custom_report_details is available in configuration and game protocols.
This packet contains a list of key-value text entries.
If received, contents of this packet are added in a separate section to any crash or disconnection report generated during connection to this server.

Server Link

Servers can now provide a list of links to clients.
If client has received any links, a new button called "Server Links..." appears in pause game screen.
- To make space for that button, "Report Bugs" and "Give Feedback" buttons might be moved into a sub-screen if necessary.
New clientbound packet server_links is available in configuration and game protocols.
On receival, client makes links available from pause menu.
Link labels can be built-in or custom (i.e. any text).
Some built-ins also have special fuctionality:
- report_bug:
  - link is displayed on disconnection screen, if disconnection was caused by packet handling error.
  - link is included as a comment in disconnection report.
Added bug-report-link to server.properties to allow vanilla server to configure report_bug links.
- If this field is non-empty, server sends that link to clients.
- This field should contain well-formed URL.
There are some generic-use link labels that have translations, like "Support" or "Website", without any special extra functionality.

Shaders

The blend block in core shader definitions has been removed, as it was not used.
The position_color_tex shader has been removed, replaced with the pre-existing position_tex_color.
The glint_direct shader has been removed, replaced with the pre-existing glint shader.
The armor_glint shader has been removed, as it was unused.

Structures

Added liquid_settings field to structures of type minecraft:jigsaw.
Possible values:
- apply_waterlogging: If any waterloggable block overlaps with existing water, it becomes waterlogged.
- ignore_waterlogging: Does not waterlog any waterloggable blocks that overlap existing water.
  - Default value is apply_waterlogging.
Added optional field override_liquid_settings to single_pool_element element type.
- Same possible values as the liquid_settings in jigsaw structures.
- Overrides the inherited liquid settings from the parent jigsaw structure while generating this pool element.

Tags

Added bogged to the #skeletons entity type tag.
Added breeze into #fall_damage_immune entity type tag.
Added vault to the #features_cannot_replace block tag.
Added trial_spawner into the #features_cannot_replace, and #lava_pool_stone_cannot_replace block tags.
Added wind_charge into the #impact_projectiles entity type tag.
Added crafter, heavy_core, tuff_slab, tuff_stairs, tuff_wall, chiseled_tuff, polished_tuff, polished_tuff_slab, polished_tuff_stairs, polished_tuff_wall, tuff_bricks, tuff_brick_slab, tuff_brick_stairs, tuff_brick_wall, chiseled_tuff_bricks, chiseled_copper, exposed_chiseled_copper, weathered_chiseled_copper, oxidized_chiseled_copper, waxed_chiseled_copper, waxed_exposed_chiseled_copper, waxed_weathered_chiseled_copper, waxed_oxidized_chiseled_copper, copper_grate, exposed_copper_grate, weathered_copper_grate, oxidized_copper_grate, waxed_copper_grate, waxed_exposed_copper_grate, waxed_weathered_copper_grate, waxed_oxidized_copper_grate, copper_bulb, exposed_copper_bulb, weathered_copper_bulb, oxidized_copper_bulb, waxed_copper_bulb, waxed_exposed_copper_bulb, waxed_weathered_copper_bulb, waxed_oxidized_copper_bulb, copper_door, exposed_copper_door, weathered_copper_door, oxidized_copper_door, waxed_copper_door, waxed_exposed_copper_door, waxed_weathered_copper_door, waxed_oxidized_copper_door, copper_trapdoor, exposed_copper_trapdoor, weathered_copper_trapdoor, oxidized_copper_trapdoor, waxed_copper_trapdoor, waxed_exposed_copper_trapdoor, waxed_weathered_copper_trapdoor, and waxed_oxidized_copper_trapdoor into mineable/pickaxe block tag.
Added crafter, chiseled_copper, exposed_chiseled_copper, weathered_chiseled_copper, oxidized_chiseled_copper, waxed_chiseled_copper, waxed_exposed_chiseled_copper, waxed_weathered_chiseled_copper, waxed_oxidized_chiseled_copper, copper_grate, exposed_copper_grate, weathered_copper_grate, oxidized_copper_grate, waxed_copper_grate, waxed_exposed_copper_grate, waxed_weathered_copper_grate, waxed_oxidized_copper_grate, copper_bulb, exposed_copper_bulb, weathered_copper_bulb, oxidized_copper_bulb, waxed_copper_bulb, waxed_exposed_copper_bulb, waxed_weathered_copper_bulb, waxed_oxidized_copper_bulb, copper_trapdoor, exposed_copper_trapdoor, weathered_copper_trapdoor, oxidized_copper_trapdoor, waxed_copper_trapdoor, waxed_exposed_copper_trapdoor, waxed_weathered_copper_trapdoor, waxed_oxidized_copper_trapdoor, copper_door, exposed_copper_door, weathered_copper_door, oxidized_copper_door, waxed_copper_door, waxed_exposed_copper_door, waxed_weathered_copper_door, and waxed_oxidized_copper_door into needs_stone_tool block tag.
Added tuff_slab, polished_tuff_slab, and tuff_brick_slab into slabs block and item tags.
Added tuff_stairs, polished_tuff_stairs, and tuff_brick_stairs into stairs block and item tags.
Added copper_trapdoor, exposed_copper_trapdoor, weathered_copper_trapdoor, oxidized_copper_trapdoor, waxed_copper_trapdoor, waxed_exposed_copper_trapdoor, waxed_weathered_copper_trapdoor, and waxed_oxidized_copper_trapdoor into #trapdoors block tag.
Added copper_door, exposed_copper_door, weathered_copper_door, oxidized_copper_door, waxed_copper_door, waxed_exposed_copper_door, waxed_weathered_copper_door, and waxed_oxidized_copper_door into #doors block tag.
Added tuff_wall, polished_tuff_wall, and tuff_brick_wall into walls block and item tags.
Added mace to the #breaks_decorated_pots item tag.
Removed music_discs item tag.

Fixes

225 issues fixed

From released versions before 1.21

MC-67 – Entities with passengers cannot travel through portals.
MC-902 – The end obsidian platform resets every time entities go through the end portal, which can cause blocks to be deleted.
MC-6431 – Status effects are lost when returning to the Overworld from the exit end portal.
MC-8983 – Primed TNT cannot travel through nether portals.
MC-9568 – Mobs suffocate/go through blocks when growing up near a solid block.
MC-9644 – Launched falling_block entities do not travel through portals.
MC-14923 – Players can be kicked for spamming in a Singleplayer world with cheats disabled.
MC-16345 – Reducing the player's base max health using /attribute does not always reduce their current health.
MC-26304 – Brewing stands reset brew cycle when unloaded.
MC-31819 – Hunger saturation depletes on Peaceful.
MC-44280 – Entities don't receive knockback from projectiles fired from dispensers.
MC-50612 – Command blocks do not update when you place them near any source of power.
MC-59626 – Arrows lose their Punch enchantment property when unloaded.
MC-76104 – Guardians are unaffected by Thorns enchantment.
MC-78473 – Mobs don't panic when hit with a summoned or dispensed potion of harming.
MC-83590 – Armor attributes list can be too long.
MC-93669 – The sweeping attack doesn't ignite other mobs when using the Fire Aspect enchantment.
MC-93833 – Only if Health is provided, maxHealth attribute is used as maximum Health value.
MC-96198 – Boats/rafts move into blocks when landing in less than one block deep water.
MC-97087 – Attributes don't work in main hand if they were in offhand.
MC-99411 – Frost Walker ice only semi-affected by randomTickSpeed gamerule.
MC-101170 – Portal sound doesn't get played when returning from the End.
MC-110815 – Slimes are summoned with the wrong amount of health.
MC-114566 – Can't teleport back to the central island with end gateway portal on outer end islands.
MC-116279 – Non-player entities going through nether portal do not generate portal in the Nether if none exists.
MC-116643 – Silk Touch cannot be combined with Looting or Luck of the Sea.
MC-117361 – Mob type specific damage enchantment (Smite, Bane of Arthropods) affects all nearby entities when hitting affected mob with Sweeping Edge.
MC-124177 – Teleporting to another dimension loses some client states.
MC-131637 – The Slowness effect is applied to entities when the Bane of Arthropods enchantment is held in the off-hand.
MC-137018 – Killing rabbits with Looting and Fire Aspect drops cooked rabbit only sometimes.
MC-137719 – The player's horizontal motion doesn't affect fired projectiles in certain situations.
MC-148741 – Selection boxes in some screens are misaligned in comparison with their text.
MC-151648 – Non-player entities cannot travel through unlinked nether portals.
MC-158245 – Fire Aspect enchantment from mobs can set you on fire even when blocking with a shield.
MC-160140 – Shulker boxes on the obsidian platform are destroyed and do not drop when a player enters the End.
MC-169698 – Blocks within igloo basements can generate waterlogged when generating in close proximity to water.
MC-170103 – Untamed wolves beg for food only while being angry and jumping.
MC-170907 – Network position deltas are processed relative to a wrong point.
MC-172031 – Throwing an ender pearl into a nether or end portal often has no effect.
MC-175619 – Dispenser drops honey bottle unless empty slot is available.
MC-175729 – Walking on the edge of underwater soul soil with Depth Strider and Soul Speed doesn't show soul particles.
MC-177965 – Putting on/taking off Soul Speed boots while standing on soul sand/soil does not properly give speed.
MC-178383 – Horses, donkeys, mules and llamas spawned from spawn eggs or /summon command have 53 health.
MC-179940 – Player's attributes reset back to default values upon respawning.
MC-181604 – Exiting the end portal resets player attributes to their default values.
MC-182606 – When sneak-walking with Soul Speed on a soul sand or soul soil block (most noticeably) adjacent to lava, too many soul particles spawn.
MC-188693 – FOV doesn't change back when riding a mob after staying on Soul Sand with Soul Speed.
MC-189365 – Player can retain Soul Speed effect by bridging.
MC-191591 – Saddles lose their NBT data when equipped on horses, zombie horses, skeleton horses, mules or donkeys via right-clicking.
MC-193343 – Soul Speed effect remains after switching to Spectator mode.
MC-195931 – Incorrect amount of damage heart particles shown when hitting some entities for the first time.
MC-200899 – Players don't receive Thorns damage when attacking entities wearing Thorns armor with indirect sweeping attacks.
MC-200991 – Soul Speed in minecart uses durability.
MC-213349 – Certain mobs that can melee can't use the Fire Aspect enchantment.
MC-215144 – A re-created "Default" world has world type of "Custom".
MC-223165 – Snout banner pattern is treated as common loot.
MC-223301 – Goats not taking damage when attacking with Thorns armor equipped.
MC-224743 – Jumping on soul sand uses durability of Soul Speed boots.
MC-225312 – Evokers using evoker fangs are not affected by the Thorns enchantment.
MC-225870 – Breeding an axolotl in Creative replaces the bucket of tropical fish.
MC-232770 – Entities receive knockback from incorrect directions when being damaged by firework explosions.
MC-234162 – The "minecraft:ui.button.click" sound isn't played when adjusting sliders if the mouse cursor is released while not being held over them.
MC-234880 – Llamas are unaffected by Thorns.
MC-237057 – The "minecraft:particle.soul_escape" sound is rarely heard by other players when using boots enchanted with Soul Speed.
MC-237063 – Particles produced from using boots enchanted with Soul Speed are inconsistently displayed for other players.
MC-248272 – Enchantment::doPostHurt and Enchantment::doPostAttack are called twice for players.
MC-252361 – Obsidian platform in the End is off by a block from entering from the Nether compared to the Overworld.
MC-252691 – Player spawns on a bedrock layer when the world is first created as a SuperFlat world with non-full blocks on the surface.
MC-252817 – Placing a map into an item frame and removing it does not remove the green player marker.
MC-252846 – Mobs can pass through fences with carpets on top when growing up.
MC-253209 – Some mobs no longer panic when receiving poison/wither damage.
MC-253457 – Cats and ocelots are immune to Thorns damage.
MC-253791 – Frogs suffocate when growing.
MC-254004 – Falling block entities do not process their end gateway cooldown timer.
MC-255218 – Fly mode is disabled after teleporting from the End to the Overworld through the end portal.
MC-258967 – Entities receive knockback from splash potions based on the direction that the said entity was facing when throwing the potion.
MC-259811 – Paintings with non-existent variant entity tag are falsely labeled as random variant.
MC-259987 – /damage command at position applies knockback in random direction.
MC-260346 – Custom music discs cut off when vanilla disc would normally end.
MC-261701 – Lag spike when opening Creative inventory for first time in world.
MC-262469 – The "Remote Getaway" advancement isn't granted upon traveling through end gateways while riding boats.
MC-265088 – Onboarding Narrator button doesn't update upon pressing Ctrl+B.
MC-265583 – Incorrect pluralization for skin customization strings for pants.
MC-265818 – The "gamerule.doVinesSpread.description" string consists of grammatically incorrect word usage.
MC-266113 – Copper doors are in the #minecraft:wooden_doors tag.
MC-266118 – Copper doors are in the #minecraft:mineable/axe tag.
MC-266140 – The "Open link" button within the Realms menu is improperly capitalized.
MC-266290 – Double doors do not automatically form between waxed and unwaxed copper doors, even of the same variant.
MC-266471 – Trial chambers can intersect aquifers, causing some blocks inside the structure to be waterlogged.
MC-266556 – Trial spawner cannot be activated in Peaceful difficulty.
MC-266586 – Trial chambers can spawn directly inside the Deep Dark biome.
MC-266626 – Breeze doesn't stop attacking the player when it enters on the same team.
MC-267050 – Chat disabled strings are missing verbs.
MC-267071 – The word "packs" within the "download.pack.failed" string is always pluralized.
MC-267154 – Using an eye of ender plays the minecraft:entity.ender_eye.launch sound event twice.
MC-267230 – Hangul fonts are rendered with missing pixels.
MC-267441 – When a player's generic.step_height attribute is set to more than two, attempting to step atop of more than two blocks may fail if there are blocks higher up.
MC-267474 – Strings referencing the player's off hand are inconsistently spelled.
MC-267498 – Operation names in /attribute and item modifiers' set_attributes are different.
MC-267947 – Ender pearls can teleport players in Spectator mode.
MC-267951 – The game freezes and eventually crashes when creating a world with the "spawnChunkRadius" gamerule set to high values.
MC-267954 – World upgrade and downgrade Realms strings are improperly capitalized.
MC-267967 – Breezes ignore the deflects_projectiles entity type tag.
MC-267968 – Medium slimes from trial chamber spawners take damage incorrectly when first hit.
MC-267981 – The "Trial Spawner crackles" subtitle is displayed only for a split second upon the "minecraft:block.trial_spawner.ambient" sound being played.
MC-267988 – Tamed entities ignore their "LookAtPlayerGoal" distance and look in the direction of their owners from any distance when being stood up.
MC-268023 – The "selectWorld.experimental.details.title" string displayed within the experimental features details menu is improperly capitalized.
MC-268106 – Entities' current health is not capped at their max health in all applicable situations.
MC-268113 – The minecraft:generic.scale attribute is desynchronized when the player leaves the End dimension via an end portal.
MC-268185 – Copper grates in trial chambers are waterlogged.
MC-268347 – Setting gravity higher than 0.84 allows you to jump up a block.
MC-268367 – Arrows repeatedly bouncing off a breeze spam sound.
MC-268370 – Japanese CJK variants use the same diacritic.
MC-268438 – Baby armadillos can still eat while rolled up.
MC-268551 – When a wind charge is fired from a dispenser, it makes a "dispensed item" sound instead of a "Wind Charge flies" sound.
MC-268564 – Entities receive knockback from incorrect directions when being hit by projectiles deflected by breezes.
MC-268598 – The "weight" of skeletons in swamp biomes is too high causing less bogged spawns.
MC-268772 – Fall damage multiplier attribute has unintuitive coloring.
MC-269034 – Wolves no longer teleport while trying to pathfind out of lava.
MC-269036 – Bogged do not drop mushrooms when sheared with doMobLoot false.
MC-269147 – Shearing a bogged spawns mushrooms at the bogged's feet.
MC-269318 – Books placed on a lectern in Creative mode are consumed.
MC-269351 – The Bolt armor trim cannot be duplicated with waxed copper block.
MC-269359 – "Field Masoned", "Skull Charge", "Flow", and "Guster" banner patterns are not mirrored on the backside.
MC-269370 – Sharp lag spike caused by incorrect upper limit on particles created by mace smash attack.
MC-269389 – Flow banner pattern is treated as common loot.
MC-269390 – Guster banner pattern is treated as common loot.
MC-269439 – Some diacritics intersect the language box in the languages menu.
MC-269460 – Thorns enchantment doesn't work when entities are hit by wind charges.
MC-269574 – Client attribute values may desync from the server after leaving the End.
MC-269601 – Mace smash attack does not knock back other players when they are not the attacked entity.
MC-269617 – When ender pearls teleport non-player entities, no teleportation sound is played upon impact.
MC-269633 – Placing an oversized filled bucket resets the stack size to 1.
MC-269642 – Eating an oversized soup/stew resets the stack size to 1.
MC-269674 – Oversized book and quill stacks reset count when signed.
MC-269685 – Buckets are lost when consuming oversized milk buckets.
MC-269686 – Oversized music disc stacks can be duplicated with jukeboxes.
MC-269708 – Dispensers using an oversized stack of water bottles resets the stack size to 1.
MC-269717 – Cauldron deletes overstacked tinted shulker boxes.
MC-269809 – Feeding an axolotl an oversized tropical fish bucket resets the stack size to 1.
MC-269881 – Flow and bolt armor trims don't grant "Crafting a New Look" advancement.
MC-269921 – Wind charges can be thrown though corners.
MC-269951 – When the gamerule "doImmediateRespawn" is set to true, the Wind Charged, Oozing or Weaving effects don't function for players.
MC-269958 – New effects are not required for the "How Did We Get Here?" advancement.
MC-269964 – Ominous item spawners are missing an NBT load for spawn_item_after_ticks.
MC-269966 – "A Furious Cocktail" Advancement does not require the new potion effects.
MC-269969 – Using a normal trial key on the ominous vault grants "Under Lock and Key" advancement.
MC-269978 – The central dispenser in eruption trial chamber is missing a water bucket.
MC-269988 – New potion effects don't apply their respective behaviors when creeper explodes.
MC-270021 – Drinking a single ominous bottle in Survival doesn't grant Bad Omen with the correct amplifier.
MC-270024 – When drinking ominous bottles, Bad Omen of higher levels can be overriden by lower amplifiers.
MC-270031 – Arrows spawned from ominous trial spawner can be picked up.
MC-270033 – Infested or Oozing effect cloud shrinks when silverfish or slime enters it.
MC-270047 – Axe prioritizes scraping copper over shield.
MC-270052 – Blur levels below 10 % do not appear to actually work.
MC-270181 – Wind charges go through an entity if it is close to a player.
MC-270216 – Mace smash attack particles cannot be reduced with the Particles setting.
MC-270278 – "Who needs rockets?" is granted at heights lower than 8 blocks when using Slow Falling.
MC-270296 – Ominous item spawner spawns unstackable arrows with potion effects.
MC-270301 – The Fire Protection enchantment applied to horse armor no longer decreases the duration of time the horse remains ablaze.
MC-270377 – Wind charges can be hit and redirected the moment they are thrown.
MC-270379 – Buttons and levers don't make sounds when toggled by wind charges.
MC-270499 – Riptide trident in off-hand applies mace effects in main hand.
MC-270539 – The Blast Protection enchantment, when applied to horse armor, no longer diminishes the knockback effect from explosions on horse.
MC-270540 – The prevention of fall damage from wind charges is not retained upon reloading the world.
MC-270572 – Programmer Art resource pack duplicates some GUI texture files.
MC-270573 – Mounted entities are immune to wind charge damage.
MC-270584 – Vault/ominous vault loot isn't predetermined, allowing players to create backups of their worlds to get desired rewards.
MC-270588 – Hitting wind charges and fireballs makes no sound.
MC-270635 – Trial spawner textures are inconsistent.
MC-270637 – maxEntityCramming set to 0 prevents slime spawning from Oozing effect.
MC-270649 – The width of challenge advancements header is calculated in relation to the slash formatting of progress counter, causing overlap in some languages.
MC-270682 – modify_contents item modifier can create overstacked items.
MC-270684 – set_attributes loot function doesn't accept an empty list.
MC-270749 – Remote Getaway advancement is not granted when entering a gateway by throwing an ender pearl next to it.
MC-270779 – Getting data with /data command from a block/chest with a large amount of data can cause the game to crash.
MC-270789 – Only mace smash attacks increment "Times Used" stat.
MC-270791 – Mace smash attack can knockback tamed mobs.
MC-270795 – Mobs despawned by ominous trial spawners can delete picked up items.
MC-270808 – Any item in the armor.body slot protects wolves from taking damage.
MC-270818 – Data generator items report is not deterministic.
MC-270821 – Regular trial spawners spawn the first mob with ominous trial equipment if they were last active as ominous.
MC-270849 – Breeze can extinguish lit candles when mobGriefing is false.
MC-270926 – "foodSaturationLevel" can be negative.
MC-270934 – Missing trial chamber structure minecraft:trial_chambers/chamber/addon/c6.
MC-270965 – The data type of the "minecraft:custom_data" component of the recipe result is forcibly modified.
MC-270974 – Breeze wind charges can change activation blockstates of redstone components when mobGriefing is disabled.
MC-270977 – Breezes don't make deflection sounds.
MC-270981 – View Bobbing toggle is not available in Accessibility Settings.
MC-270988 – Iron golem and snow golem spawn eggs from before 1.13 do not upgrade to 1.20.5 correctly
MC-271001 – Items in a container can be given a count above 99 (to max integer), and can crash the world.
MC-271005 – Knowledge books with a max stack size over 1 consume all items in the stack when used.
MC-271026 – Components that set a status effect sometimes lose parts of the data.
MC-271034 – List entries in the Social interactions menu are rendered over the background.
MC-271039 – Upgrading to 1.20.5 leads to the removal of all enchantments if item had the "sweeping" enchantment without namespace.
MC-271094 – Entity ID inside EntityTag is ignored when updating a world to 1.20.5.
MC-271157 – "Telemetry is disabled" tooltip does not get updated when the client locale changes.
MC-271159 – Banner pattern entries without colors are invalidated when upgrading to 1.20.5.
MC-271168 – Demo timer does not respect "Text Background" setting.
MC-271170 – Unexpected error when modifying skull's custom name to an invalid value.
MC-271199 – Advancement "Local Brewery" not granted on shift-clicking.
MC-271244 – Auto-save text does not respect "Text Background" setting in accessibility settings.
MC-271293 – Wind charge, fireball and shulker bullet makes a "Burning" sound as it passes through the lava.
MC-271353 – Crafting UI flickers incorrect or blank recipes when choosing items from the recipe book.
MC-271360 – Horse armor and wolf armor are deleted when used on an armor stand.
MC-271414 – /damage command at position applies knockback in random direction.
MC-271446 – Mace attack speed was lowered to a point where all Wind Burst smash attacks are performed on uncharged attacks.
MC-271897 – End portal makes items disappear.
MC-271980 – Arrows/bee stingers stuck in players disappear when leaving the End.
MC-272014 – Ender Dragon death animation is broken since 20w22a (and broken again in 20w45a).
MC-272073 – Item displays with billboard and rotation values create major visual bug.
MC-272079 – Medium/small slimes and magma cube's attack reach is too short.
MC-272194 – Empty attribute modifiers lost during upgrade.
MC-272198 – Shulkers' models sometimes appear offset upon end city generation.
MC-272241 – Error when traveling through nether portal outside world border.
MC-272253 – The strength of the Riptide enchantment is increased when holding tridents enchanted with Riptide in both hands.
MC-272267 – "Changes the blurriness of menu background" lacks punctuation.
MC-272279 – Resource packs containing TrueType fonts fail to load on x64 macOS systems.
MC-272308 – Axolots can be attached to new leads when being already leashed.
MC-272445 – Command blocks made from Ctrl + Pick Block do not activate on first try.
MC-272469 – When the wind charge, fireball or shulker bullet is in the lava, it continues to make a high-loudness noise.
MC-272515 – Component-modified saddles get their components wiped when dispensed onto a horse, mule, or camel.
MC-272808 – Step height steps too high when there's a gap the player can fit through.
MC-272996 – Using "/execute in..." to switch dimensions causes the player to fall when flying.

From the 1.21 development versions

MC-273078 – Random "Failed to retrieve profile key pair" error when opening a world to LAN.

Video

Videos made by Slicedlime:

Trivia

This update has the shortest time span between the first snapshot and the change of its panorama.

References

↑ "Minecraft Java Edition 1.21" – Minecraft.net, June 13, 2024.
↑ MC-269966 — "A Furious Cocktail" Advancement does not require the new potion effects — resolved as "Fixed".
↑ MC-269958 — New effects are not required for the "How Did We Get Here?" advancement — resolved as "Fixed".
↑ MC-269881 — Flow and bolt armor trims don't grant "Crafting a New Look" advancement. — resolved as "Fixed".

Navigation

[stacksize-2] The size of stacks (or for unstackable items, number) of this item on any given roll.

[weight-3] The weight of this item relative to other items in the pool.

[chance-4] The odds of finding any of this item in a single chest.

[items-5] The number of items expected per chest, averaged over a large number of chests.

[chests-6] The average number of chests the player should expect to search to find any of this item.

[stacksize-7] The size of stacks (or for unstackable items, number) of this item on any given roll.

[weight-8] The weight of this item relative to other items in the pool.

[chance-9] The odds of finding any of this item in a single chest.

[items-10] The number of items expected per chest, averaged over a large number of chests.

[chests-11] The average number of chests the player should expect to search to find any of this item.

[nothing-12] 'Nothing' does not refer to the chance of an empty chest. Instead, it refers to the chance that the random loot generator does not add any loot on a single roll.

[ominous-bottle-2-4-13] Ominous bottle level between III and V

[enchant-with-levels-5-20-14] Enchantment probabilities are the same as a level-5 to level-20 enchantment would be on an enchantment table that was able to apply treasure enchantments (except Soul Speed, Swift Sneak, and Wind Burst), and where the chance of multiple enchantments is not reduced.

[enchant-with-levels-10-20-15] {Jump up to: a} ^b Enchantment probabilities are the same as a level-10 to level-20 enchantment would be on an enchantment table that was able to apply treasure enchantments (except Soul Speed, Swift Sneak, and Wind Burst), and where the chance of multiple enchantments is not reduced.

[enchant-randomly-breach-density-16] Enchanted with a random level of Breach, or Density.

[enchant-randomly-trial-chambers-2-17] Enchanted with a random level of Knockback, Punch, Smite, Looting, or Multishot.

[enchant-randomly-wind-burst-18] Enchanted with level I of Wind Burst.

[stacksize-19] The size of stacks (or for unstackable items, number) of this item on any given roll.

[weight-20] The weight of this item relative to other items in the pool.

[chance-21] The odds of finding any of this item in a single chest.

[items-22] The number of items expected per chest, averaged over a large number of chests.

[chests-23] The average number of chests the player should expect to search to find any of this item.

[stacksize-24] {Jump up to: a} ^b The size of stacks (or for unstackable items, number) of this item on any given roll.

[weight-25] {Jump up to: a} ^b The weight of this item relative to other items in the pool.

[chance-26] {Jump up to: a} ^b The odds of finding any of this item in a single chest.

[items-27] {Jump up to: a} ^b The number of items expected per chest, averaged over a large number of chests.

[chests-28] {Jump up to: a} ^b The average number of chests the player should expect to search to find any of this item.

[nothing-29] {Jump up to: a} ^b 'Nothing' does not refer to the chance of an empty chest. Instead, it refers to the chance that the random loot generator does not add any loot on a single roll.

[ominous-bottle-0-1-30] {Jump up to: a} ^b Ominous bottle level between I and II

[damaged-0.5-1.0-31] {Jump up to: a} ^b The item has between 50% and 100% of its total durability.

[enchant-with-levels-5-15-32] {Jump up to: a} ^b ^c ^d ^e ^f ^g ^h Enchantment probabilities are the same as a level-5 to level-15 enchantment would be on an enchantment table that was able to apply treasure enchantments (except Soul Speed, Swift Sneak, and Wind Burst), and where the chance of multiple enchantments is not reduced.

[enchant-randomly-trident-33] {Jump up to: a} ^b Enchanted with a random level of Mending, Riptide, Loyalty, Channeling, or Impaling.

[enchant-randomly-trial-chambers-34] {Jump up to: a} ^b Enchanted with a random level of Sharpness, Bane of Arthropods, Efficiency, Fortune, Silk Touch, or Feather Falling.

[enchant-with-levels-5-20-35] {Jump up to: a} ^b Enchantment probabilities are the same as a level-5 to level-20 enchantment would be on an enchantment table that was able to apply treasure enchantments (except Soul Speed, Swift Sneak, and Wind Burst), and where the chance of multiple enchantments is not reduced.

[enchant-with-levels-0-10-36] {Jump up to: a} ^b Enchantment probabilities are the same as a level-0 to level-10 enchantment would be on an enchantment table that was able to apply treasure enchantments (except Soul Speed, Swift Sneak, and Wind Burst), and where the chance of multiple enchantments is not reduced.

[tricky-trials-release-1] "Minecraft Java Edition 1.21" – Minecraft.net, June 13, 2024.

[37] MC-269966 — "A Furious Cocktail" Advancement does not require the new potion effects — resolved as "Fixed".

[38] MC-269958 — New effects are not required for the "How Did We Get Here?" advancement — resolved as "Fixed".

[39] MC-269881 — Flow and bolt armor trims don't grant "Crafting a New Look" advancement. — resolved as "Fixed".

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 {{relevant guide|Java Edition guides/Tricky Trials}}
-'''1.21''', the first release of '''[[Tricky Trials]]''', is a major update to {{JE}} released on June 13, 2024.<ref name="tricky-trials-release">{{Mcnet|minecraft-java-edition-1-21|Minecraft Java Edition 1.21|June 13, 2024}}</ref> Originally announced at [[Minecraft Live 2023]] on October 15, 2023, the name of the update was revealed in a [[Minecraft Monthly]] on April 26, 2024. The update was said to focus on "[[combat]] adventures and tinkering" and introduces several [[Copper|copper block]] variants and a new structure called [[trial chambers]], as well as the new [[crafter]], new [[tuff]] variants, the new [[mace]] weapon, twenty new paintings, and new [[hostile mob]]s that spawn in the trial chambers, among others. It also includes some changes to the [[Bad Omen]] effect and many bug fixes.
+'''1.21''', the release of '''[[Tricky Trials]]''', is a update to {{JE}} that was launched on June 13, 2024.<ref name="tricky-trials-release">{{Mcnet|minecraft-java-edition-1-21|Minecraft Java Edition 1.21|June 13, 2024}}</ref> It Was Originally announced at [[Minecraft Live 2023]] on October 15, 2023, the name of the update was revealed in a [[Minecraft Monthly]] on April 26, 2024. The update was said to focus on "[[combat]] adventures and tinkering" and introduces several [[Copper|copper block]] variants and a new structure called [[trial chambers]], as well as the new [[crafter]], new [[tuff]] variants, the new [[mace]] weapon, twenty new paintings, and new [[hostile mob]]s that spawn in the trial chambers, among others. It also includes some changes to the [[Bad Omen]] effect and many bug fixes.
 .21 is the first major version of ''Java Edition'' to require a 64-bit operating system and Java 21 or above.

Java Edition 1.21: Difference between revisions

Revision as of 11:45, 10 April 2025

Contents

Additions

Blocks

Items

Mobs

Non-mob entities

World generation

Gameplay

General

Changes

Blocks

Items

Mobs

Non-mob entities

World generation

Gameplay

General

Technical

Additions

Command format

General

Changes

Command format

General

Fixes

Video

Trivia

References

Navigation

Navigation menu