Living weapon

Living weapon is a keyword for equipment cards introduced in Mirrodin Besieged. When a card with Living weapon enters the battlefield, it puts a 0/0 black Germ creature token into play and attaches itself to it. Thus Living weapons are themselves creatures until their controller chooses to upgrade a different creature, with the detaching of the equipment and killing the Germ, as it is now a 0/0 creature. Due to state-based effects it is put into the graveyard and ceases to exist. Living Weapon was featured as rules card 3 of 5 in the Mirrodin Besieged set and as rules card 2 of 4 in the New Phyrexia set.