Eldritch Evolution

Eldritch Evolution {1}{G}{G}

As an additional cost to cast Eldritch Evolution, sacrifice a creature.
Search your library for a creature card with converted mana cost X or less, where X is 2 plus the sacrificed creature's converted mana cost. Put that card onto the battlefield, then shuffle your library. Exile Eldritch Evolution.
Edition: [EMN] Eldritch Moon ( R · #155 )