Gandalf, the White

+2: Draw 2 cards and gain 2 life. Each player discards a card. You have no maximum hand size until your end step next turn.
-2: Gandalf, the White deals 4 damage divided over 4 or less targets. Scry 3, then draw two cards, then discard a card.
-12: Look at each player's hand. Put one card onto the battlefield under your control from each hand and the rest on top of your library in any order.