Zar, Seer of the Future

+1: Create 2 1/1 Seer creature tokens with "Sacrifice this creature. Draw 2 cards."
-2: Scry X , where X is the number of cards in your hand. Put 3 of them in your hand and the rest in your back. You gain 3 life.
-X: Draw X cards. You gain X life. Each opponent exiles X cards from their hand. They each draw 2 cards.