Swain, Grand General

+1: Target opponent draws a card, then look at their hand, the chosen opponent discards two cards of your choosing
-1: Destroy target permanent, scry and gain life equal to its mana cost, you may draw a card if the permanent destroyed was a creature
-12: Swain becomes a 12/12 demon creature with haste, indestructible, trample, deathtouch, and hexproof until the end of turn