Kiritsugu, Mage Killer

+2: Deal 2 damage to target player or planeswalker, then each player discards a card. You cannot activate this ability if you have no cards in hand.
-3: Exile target card. That card's controller draws a card. Your opponent may pay 5 life and sacrifice a card they control to counter this effect.
-7: You get an emblem that says "Planeswalkers cannot activate their abilities. Permanents all players control have hexproof."