Patron of the Nezumi [Commander 2011]

Set: Commander 2011 Type: Legendary Creature — Spirit Rarity: Rare Cost: {5}{B}{B} Rat offering (You may cast this card any time you could cast an instant by sacrificing a Rat and paying the difference in mana costs between this and the sacrificed Rat. Mana cost includes color.)Whenever a permanent is put into an opponent's graveyard, that player loses 1 life.