“How the UHF made this is still an unanswered question…”
Chicken voodoo doll is a perishable. When you die, the collision damage you dealt on an object will also deal to a random chicken on screen. a random chicken on screen will die. This perishable does not affect this bosses The collision damage you dealt to a boss will affect another random boss if that boss wave has 2 or more bosses.
What is people obsession with items that use “death” mechanic? I mean, you shouldn’t want to lose a life in the game. You should just improve your skill and not depend on items that only activate when you kill yourself. I can kind of understand those items in a game where you have health bar - like for example in Hollow Knight. There’s stereotypical item that damages enemies when they damage you. (I swear every RPG has this mechanic). It’s also a really hard game and not every contact with enemy kills you so this item can actually give you advantage there. But in CIU? Why, for what?