Volrath's Shapeshifter
Creature — Phyrexian Shapeshifter, {1}{U}{U}
Oracle Text
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.