From Rampage Knights Wiki
Ass Potion, transforming their head into either a Donkey or a Butt, the potion has no benefit outside of giving the player a disease which is beneficial for Cursed Sword of the Underworld. This alters the player's appearance and sounds, but has no other effects. It's in-game description is "Has a shocking effect."
|Curses, Diseases and Blessings|