… is a joke mod that adds two potions: Potion of Dumbness and Potion of Super Dumbness.
- Potion of Dumbness will clear all AI tasks of target entity (implying that target must be an
EntityLiving), and add a idle looking task, until the entity is reloaded from chunk due to whatever reason(s). - Potion of Super Dumbness will mark target entity with
setNoAI(true), effectively "freezing" them.
Additionally, a command /dumb <target> is provided to make target entity dumb, which is equivalent to use
Potion of Dumbness on the said target. The <target> part may be a selector.
https://blog.phoenixlzx.com/2017/05/05/reduce-minecraft-server-lag-without-limit-mob-amount/