Kegagai Awakened

+2: Exile target land, and target nonland permanent.
-5: Kegagai Awakened becomes a 7/7 colorless Eldrazi creature with annihilator 2 until end of turn. Its still a planeswalker.
-20: You may choose any number of Eldrazi cards you own from outside the game or in exile, reveal those cards, and put them onto the battlefield.