Help with spreading a biome via throwable

Started by Lambda System on

Topic category: Help with Minecraft modding (Java Edition)

Joined Jun 2023
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Help with spreading a biome via throwable

I'm making a sort of flask-type item where if thrown and it hits a block, it spreads a biome as well as replaces the nearby blocks 

I THINK I have a grasp of it, but I feel like there is a better way to properly execute this goal. Any help would be appreciated <3

Joined Nov 2022
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As far as I know the only…
Wed, 07/05/2023 - 18:34

As far as I know the only way to set biome entries is to run the command /fillbiome.

Joined Sep 2025
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or you can make the it…
Sun, 09/21/2025 - 17:23

or you can make the it spread if you first throw one block and the bloc has a triger that on world random tick ubdate place or replace  a block at random 0,1 and set the block. Then the biome will spread