Volrath's Shapeshifter 1UU
Creature — Phyrexian Shapeshifter
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 "2: Discard a card." (This creature has that card s name, mana cost, color, types, abilities, power, and toughness.)

2: Discard a card.