An Onion?

uuuuhhhhhhh onion filled with so much anger and hatred for some reason, that when any entity (yes, any. even an ant) consumes it, that being just has a rage blackout and fights the closest entity within 30 feet. If no-one is around, they fight the wall or floor or something. This lasts for 3 in-game hours, or until it kills something. The entity gets controlled by the DM. It can use any spells, weapons, or anything in the inventory with the same intelligence as it would normally have. It feels no remorse or sense of danger, and if its a player attacking a player and one dies, sucks to suck I guess. :/