Cilphos, the Seeker

+2: scry X, where X is your greatest devotion to either {w}, {u}, or {b}.
-1: look at the top card of your library, you may play cards exiled this way as long as you control a Cilphos planeswalker.
-7: Look at the top 5 cards of your library, until end of turn you may cast any of them without paying their mana cost.