Magic: the Gathering - Datenbank

Whenever this creature transforms into Werewolf Ransacker, you may destroy target artifact. If that artifact is put into a graveyard this way, Werewolf Ransacker deals 3 damage to that artifact's controller. At the beginning of each upkeep, if a player cast two or more spells last turn, transform Werewolf Ransacker.  The rising of the first full moon eliminated any doubt as to the horrible truth lurking within.