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.
Near Mint - $5.20
Lightly Played - $4.70
Played - $3.70
Heavily Played - $3.10
Damaged - $2.60
Near Mint Non-English - $5.20
Lightly Played Non-English - $4.70
Played Non-English - $3.70
Heavily Played Non-English - $3.10
Damaged Non-English - $2.60