Beelzebub, Gluttonous Fly

Flying Unless Beelzebub’s Blood Price ability has been activated, it is not a creature. Blood Price 5 (If players have lost a total of 5 or more life this turn, this card becomes a creature until the end of the turn.) Whenever Beelzebub enters the battlefield or becomes a creature, you and each opponent sacrifice a creature, then you gain life equal to the combined mana cost of all creatures sacrificed this way.{flavor}In death, I shall devour their pitiful souls and feast upon their hope for a final rest!