Jason: Alternate Jace

+2: Jason: Alternate Jace deals 4 damage to any target and you discard a card
-5: Draw a card, then discard a card, Jason deals X damage to any target where X is the discarded card's converted mana cost
-10: Jason deals X damage to all creatures you don't control and becomes an X/X creature where X is the number of cards in target player's graveyard