Dimir Machinations (RAV-084) - Ravnica: City of Guilds

Look at the top three cards of target player's library. Exile any number of those cards, then put the rest back in any order.
Transmute {1} ({1}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)