+2: Target opponent exiles cards from the top of his or her library until he or she exiles a nonland card. Until end of turn, you may cast that card without paying its mana cost.
+1: Each opponent exiles two cards from his or her hand.
−4: Nicol Bolas, God-Pharaoh deals 7 damage to target opponent or creature an opponent controls.
−12: Exile each nonland permanent your opponents control.