Jahatar, Void Herald

+1: Each opponent exiles the top card of their library. You may play one card from among them without paying its mana cost.
-2: Exile the top card of your library. You may destroy all nonland permanents with CMC equal to the exiled card.
-7: Exile all creatures you don't control. For each nontoken creature exiled this way, put a token into play that is a copy of that creature.