Endrek Sahr, Master Breeder [Commander 2013]

Set: Commander 2013 Type: Legendary Creature — Human Wizard Rare Cost: {4}{B} Whenever you cast a creature spell, create X 1/1 black Thrull creature tokens, where X is that spell's converted mana cost. When you control seven or more Thrulls, sacrifice Endrek Sahr, Master Breeder.