Davriel, the Shadowmage

+1: Look at the top 3 cards of each opponent's library. From each opponent, exile a card face down. Draw a card.
0: Choose a face down card exiled by a Davriel Cane planeswalker, it gains flash. Until your next turn you may cast it without paying its mana cost.
-2: Lose 2 life. Create a 5/5 demon with flying.