It Spreads
Kill a mob near a Sculk Catalyst
Overview
It Spreads is a task advancement in the Adventure tab of Minecraft's advancement system, carrying the in-game description "Kill a mob near a Sculk Catalyst." It branches directly off Monster Hunter, so that earlier advancement is its prerequisite and must be earned first. The Adventure tab covers advancements focused on exploration, combat, trading, and interacting with the world and its inhabitants. It Spreads was added in Minecraft 1.19, from The Wild Update, and remains part of the current 1.21 advancement set.
It is rated Hard difficulty on this site: requires significant effort, rare resources, or dangerous encounters. It uses the standard task frame, meaning it is a normal step in the tree rather than a goal or challenge milestone. One further advancement, Sneak 100, is gated behind it.
In tree terms, It Spreads sits second along its line: the full path from the Adventure root reads Adventure -> Monster Hunter -> It Spreads. That means 2 advancements must be completed before this one becomes available, and It Spreads is one of 40 total advancements in the Adventure tab. It shares its parent with 4 sibling advancements (Monsters Hunted, Take Aim, Hired Help, and Throwing Things), all of which open from the same point in the tree.
How to Complete It Spreads
Earning It Spreads comes down to the following, performed in order:
- Kill any mob near a Sculk Catalyst block.
- Sculk catalysts are found in the Deep Dark biome near ancient cities.
- When a mob dies within 8 blocks, the catalyst spreads sculk growth.
Tips & Fastest Route
Tips & Fastest Route- Fastest route: Kill any mob within 8 blocks of a sculk catalyst in the Deep Dark.
- Sculk catalysts cluster around ancient cities; lure a mob to one and kill it there.
- Spawn a simple mob with an egg or wait for a wanderer rather than hunting for one.
- Make sure Monster Hunter is already ticked off before you start, otherwise It Spreads will not be tracked even if you perform the steps correctly.
- At Hard difficulty, It Spreads rewards preparation over speed — line up the items and conditions in the steps first rather than improvising mid-attempt.
Common Mistakes
Common Mistakes- Remember that It Spreads will not appear as available until Monster Hunter is done, since the game only tracks an advancement once its parent has been unlocked.
Reward & What It Unlocks
Reward & What It UnlocksCompleting It Spreads grants 10 experience points. The XP drops at your position the moment the advancement fires.
Earning it unlocks Sneak 100, which becomes the next step along this branch of the tree.
Details
- Advancement ID
minecraft:adventure/kill_mob_near_sculk_catalyst- Icon Item
- Sculk Catalyst
- Category
- Adventure
- Difficulty
- Hard
- XP Reward
- 10 XP
- Version Added
- 1.19
Advancement ID
Category
Version Added
It Spreads Advancement FAQ
How do you get the It Spreads advancement in Minecraft?
Kill any mob within 8 blocks of a sculk catalyst in the Deep Dark. In full, kill any mob near a Sculk Catalyst block. Sculk catalysts are found in the Deep Dark biome near ancient cities. When a mob dies within 8 blocks, the catalyst spreads sculk growth.
What do you need for It Spreads?
Before you can work on it you must have completed Monster Hunter. Kill any mob near a Sculk Catalyst block. Sculk catalysts are found in the Deep Dark biome near ancient cities.
Which advancement tab is It Spreads in?
It Spreads is in the Adventure tab, hanging beneath Monster Hunter. Its in-game advancement ID is minecraft:adventure/kill_mob_near_sculk_catalyst.
Is It Spreads part of the Monster Hunter branch?
Yes. It Spreads sits directly below Monster Hunter in the Adventure tree, so you must earn Monster Hunter first. Completing It Spreads then opens Sneak 100.
How much XP does It Spreads give and how hard is it?
It Spreads awards 10 XP and is rated Hard difficulty.
When was It Spreads added to Minecraft?
It Spreads was added in Minecraft Java Edition 1.19 and is present in the current 1.21 advancement set.