Volrath's Shapeshifter
Creature — Phyrexian Shapeshifter0/1$13.47
As long as the top card of your graveyard is a creature card, this creature has the full text of that card and has the text ": Discard a card." (This creature has that card's name, mana cost, color, types, abilities, power, and toughness.) : Discard a card.
Legal in Commander