Mhrokna, Chaotic Savant

+2: Scry 2. Reveal the top card of your library. If it costs equal or less the number of lands you control, you may cast it.
-2: Clash with an opponent. If you win the clash, put a card from outside the game into your hand.
-3: Reveal a nonpermanent card from your hand. Mhrokna, Chaotic Savant deals damage to each creature, player and planeswalker equal to its mana cost.