Ajuba, Zul's Masterpiece

+2: Each player may scry 3, then each player exiles one card among them. You may play those cards, as long as they are exiled.
-3: Draw 3 cards, you may spend blue mana as though its mana of any color to cast spells this turn.
-10: You may have any number of players mill half their library and take damage equal to the number of cards in their graveyard.