Practiced Guesswork

When Practiced Guesswork enters the battlefield, search your library for four cards with different names and reveal them. Place the cards face down in a random order on Practiced Guesswork. At the beginning of your pre-combat main phase, name a card then reveal the top card of the pile. If you reveal the named card, cast it without pay- ing it's mana cost, otherwise exile it.
"Sooner or later I'm going to be right."