Drikud, Mystic Hermit

{x}{u/r}, {t}: Search your library for all spells with converted mana cost X and exile them. Choose a card exiled with Drikud, Mystic Hermit at random. Until end of turn, you may cast that spell without paying its mana cost. Shuffle all other cards exiled this way into your deck.
"Choices, choices- who needs them?"