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This article describes content that may be included in Java Edition. 
This content has appeared in Java Edition 1.19 development versions, but the full update containing it has not been released yet.
This content already exists in Bedrock Edition.
Blue Beaker BE1
The features on this page are exclusive to Experimental Gameplay in Bedrock Edition. 
These features may be properly added in a future update, but currently require enabling one or more settings in the "Wild Update" section of the Game Settings menu.

A sculk catalyst is a block that generates Sculk features around it when a mob is killed nearby.

Obtaining

Sculk catalysts can only be obtained in the creative inventory.‌[Bedrock Edition only]

Natural generation

Sculk catalysts are generated within the deep dark biome.‌[Java Edition only]

Chest loot

Item Structure Container Quantity Chance
Java Edition
Sculk Catalyst Ancient City Chest 1–2 16.1%
Bedrock Edition
Sculk Catalyst Ancient City Chest 1–2 16.1%

Breaking

Sculk catalysts can be mined with any tool, but hoes are the quickest. It drops 20 experience if mined without Silk Touch.

Block Sculk Catalyst
Hardness 3
Tool
Breaking time[A]
Default 4.5
Wooden 2.25
Stone 1.15
Iron 0.75
Diamond 0.6
Netherite 0.5
Golden 0.4
  1. Times are for unenchanted tools as wielded by players with no status effects, measured in seconds. For more information, see Breaking § Speed.

Usage

Sculk Catalyst Bloom BE1

Sculk catalyst activating

Sculkcatalystrange

Sculk catalyst detection range

In Bedrock Edition , if a mob dies within 8 blocks of a sculk catalyst, it blooms, giving off soul particles and creates a patch of sculk with sculk veins around that location. Blooming sculk can replace blocks such as grass blocks, dirt, coarse dirt, stone, deepslate, andesite, diorite, granite and sandstone. The size of the patch does not depend on the amount of experience dropped.

Sculk Catalyst bloom and spread sculks

It turns the blocks around the dead Mob into Sculk or Sculk Vein.

‌In Java Edition 1.19[upcoming], if a mob dies within 8 blocks of a sculk catalyst, it blooms, giving off soul particles and creates a patch of sculk with sculk veins around that location. Blooming sculk can replace blocks in the sculk_replaceable tag, which includes the surface materials of most of the biomes in all three dimensions. If a mob is killed and detected by the sculk catalyst while over a sculk block, it may occasionally result in the growth of a sculk sensor or sculk shrieker.

The means of death of the mob is irrelevant; mobs can die from being killed by a player or tamed wolf, which yields experience, or by any other means, which does not yield experience; any kill is accepted by the catalyst. In addition, baby animals, which also do not yield experience when killed, also contribute to the catalyst. Rather than granting experience, a bubbling charge will spawn where the mob died. The strength of the sculk spreading depends on amount of experience the mob have dropped when it was killed by a player or wolf. Several sculk charges may end up on the same block and merge, up to 1000 experience per block.

If a mob dies and a charge is detected more than 4 blocks from a catalyst, a sculk block has a chance to use 10 experience to grow a sculk sensor or sculk shrieker. A sculk sensor has a 9% chance to spawn while a sculk shrieker has a 1% chance to spawn. However, sculk sensors and shriekers cannot spawn if there are 2 or more sensors or shriekers within a 9×3×9 box with the bottom center of the box centered on the bubbling charge location (or within -4,0,-4 and 4,2,4 in relative coordinates). The Ender Dragon is the only mob that the sculk catalyst doesn't detect.

A player dying can also affect the sculk catalyst, depending on how much experience the player has gathered. The sculk catalyst wouldn't spread any sculk blocks if the player has 0 experience, little if the player has few experience points and varied if the player has more experience. This could make the sculk catalyst as a way to preserve the player's experience points without having to restore all of the player's previous experience. This doesn't work on players with the "KeepInventory" gamerule set to true.

Sounds

Generic

Java Edition:

SoundSubtitlesSourceDescriptionResource locationTranslation keyVolumePitchAttenuation
distance
Block brokenBlocksOnce the block has brokenblock.sculk_catalyst.breaksubtitles.block.generic.break1.00.816
Block placedBlocksWhen the block is placedblock.sculk_catalyst.placesubtitles.block.generic.place1.00.816
Block breakingBlocksWhile the block is in the process of being brokenblock.sculk_catalyst.hitsubtitles.block.generic.hit0.250.516
None[sound 1]BlocksFalling on the block with fall damageblock.sculk_catalyst.fallNone[sound 1]0.50.7516
FootstepsBlocksWalking on the blockblock.sculk_catalyst.stepsubtitles.block.generic.footsteps0.151.016
  1. a b MC-177082

Bedrock Edition:

SoundSourceDescriptionResource locationVolumePitch
BlocksOnce the block has brokenbreak.sculk_catalyst1.00.8-1.0
BlocksWhen the block is placedbreak.sculk_catalyst1.00.8-1.0
BlocksWhile the block is in the process of being brokenhit.sculk_catalyst0.30.5
Friendly CreaturesFalling on the block with fall damagestep.sculk_catalyst0.41.0
Friendly CreaturesWalking on the blockstep.sculk_catalyst0.171.0
Friendly CreaturesJumping from the blockstep.sculk_catalyst0.121.0
Friendly CreaturesFalling on the block without fall damagestep.sculk_catalyst0.141.0

Data values

ID

Java Edition:

NameIdentifierFormTranslation key
Sculk Catalystsculk_catalystBlock & Itemblock.minecraft.sculk_catalyst

ID

Bedrock Edition:

NameIdentifierNumeric ID FormItem ID[i 1]Translation key
Sculk Catalystsculk_catalyst715Block & Giveable Item[i 2]Identical[i 3]tile.sculk_catalyst.name
  1. ID of block's direct item form, which is used in savegame files and addons.
  2. Available with /give command.
  3. The block's direct item form has the same id as the block.

Block states

See also: Block state

Java Edition:

Name Default value Allowed values Description
bloomfalsefalse
true
Whether the sculk catalyst is actively spreading the sculk or not.

Bedrock Edition:

Name Default value Allowed values Description
bloom00
1
Whether the sculk catalyst is actively spreading the sculk or not.

History

October 3, 2020Sculk Catalyst (pre-release) Sculk catalysts are shown at Minecraft Live 2020.
November 13, 2020Sculk Catalyst BE1 The sculk catalyst has a new texture in a tweet from Brandon Pearce.
April 26, 2021Kingbdogz states that sculk features aren't coming in 1.17.
October 16, 2021Sculk features were delayed to 1.19.
Sculk Catalyst Bloom BE1 New sculk catalyst functions was shown.
Upcoming Java Edition
1.19Deep Dark Experimental Snapshot 1Sculk Catalyst BE1 Sculk Catalyst Bloom BE1 Added sculk catalysts.
Bedrock Edition
1.17.30beta 1.17.30.22"Sculk Catalyst" was mentioned in Bedrock Beta documentation.
beta 1.17.30.23Sculk Catalyst (top texture) BE1 Sculk Catalyst (side texture) BE1 Sculk Catalyst (bottom texture) BE1 Sculk Catalyst (top bloom texture) BE1 Sculk Catalyst (side bloom texture) BE1 Sculk Catalyst texture was shown in internal Caves & Cliffs textures.
1.18.0beta 1.18.0.22Sculk Catalyst BE1 Sculk Catalyst Bloom BE1 Added sculk catalysts.
The Wild Update (experimental)beta 1.18.10.21Moved sculk catalysts to the "Wild Update" experimental toggle.

Issues

Issues relating to "Sculk Catalyst" are maintained on the bug tracker. Report issues there.

Gallery

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