Living weapon (When this Equipment enters the battlefield, put a 0/0 black Germ creature token onto the battlefield, then attach this to it.) Equipped creature gets +4/+4 and has vigilance and lifelink. : Return Batterskull to its owner's hand. Equip
Official Rulings for Batterskull
6/1/2011 : The ability to return Batterskull to its owner's hand can only be activated if Batterskull is on the battlefield. If Batterskull is no longer on the battlefield when the ability resolves, it will have no effect.