MINECRAFTBIBLE
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Vanilla-inspired spawn potion effects for hostile mobs
MobEffects is a lightweight, vanilla-inspired Paper plugin that extends the existing Minecraft mechanic where spiders can spawn with potion effects.
In vanilla Minecraft, spiders have a small chance to spawn with effects such as Speed, Strength, Regeneration, or Invisibility.
MobEffects applies the same idea to other hostile mobs, without adding complex systems or altering core gameplay.
MobEffects is fully configurable through config.yml.
Both the list of affected mobs and their potion effects can be freely modified.
The default configuration uses Zombie, Skeleton, and Creeper as examples, but these are not hard-coded limitations.
Server owners can:
No code changes or recompilation are required.
By default, effects are applied only when:
The plugin does not modify mob AI, attributes, damage, drops, or behavior — it only applies potion effects.
The following mobs and effects are used in the default configuration:
Zombie and Skeleton effects are almost permanent, similar to vanilla spider effects.
Creeper effects last for a configurable random duration (30–45 seconds by default).
MobEffects supports two effect application modes:
MobEffects is designed to work alongside datapacks such as Upgraded Mobs.
It does not override or interfere with datapack mechanics and applies effects with a short delay to avoid conflicts.
MobEffects follows a vanilla-first design philosophy:
The goal is to make hostile mobs slightly more varied, while still feeling like part of vanilla Minecraft.
If you find a bug or have a question about the plugin, please contact me on my Telegram channel - @spicesmp