Psydvin Beckoning

Search your library for up to four colorless cards
with different names, reveal them, then exile
them face down into their own separate piles.
Target opponent chooses one of those piles,
then chooses a pile at random. If the same pile
was chosen, put the chosen card into your
graveyard and the rest onto the battlefield face up
under your control. Otherwise, put the chosen
cards into your graveyard and the rest into your
hand.