Eldritch Evolution [Mystery Booster]

Set: Mystery Booster Type: Sorcery Rarity: Rare Cost: {1}{G}{G} As an additional cost to cast this spell, sacrifice a creature.Search your library for a creature card with mana value X or less, where X is 2 plus the sacrificed creature's mana value. Put that card onto the battlefield, then shuffle. Exile Eldritch Evolution.