Caviel, the Ashenborn

+2: Until end of turn, Caviel, the Ashenborn becomes a 2/2 Succubus Demon creature with lifelink and deathtouch that's still a planeswalker.
-2: You get an emblem with "When Caviel, the Ashenborn is destroyed, return it to the battlefield at the beginning of the next upkeep".
-6: Destroy target permanent.