Eldritch Evolution

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.
"We traffic in flesh, not souls. Still, it's a shame to let anything go to waste."