Khorne, Lord of Skulls

+1: Until end of turn, Khorne, Lord of Skulls becomes a 5/5 Demon Warrior with indestructible and First Strike that's still a planeswalker.
-2: Creatures you control get +2/+2 and gain First Strike until the end of turn.
-7: You get an emblem with "You choose which creatures attack or block and how those creatures attack or block each combat."