+2: target opponent exiles cards from the top of their 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.