Blaize, the Burning Soul

+1: Blaize, the Burning Soul deals 3 damage to any target. If that target would die this turn, exile it instead
-3: Look at the top 5 cards of your library. Put them in any order on the top of your library. Draw 2 cards.
-X: As an additional cost to this ability, discard 3 cards. Blaize, the Burning Soul deals X damage to up to 3 targets.