Power, Blood Fiend

+1: Until end of turn, target planeswalker becomes a 3/4 Devil creature with menace, first strike and deathtouch
-2: Sacrifice X blood tokens: Create X 3/2 white Cat creature tokens. Cats and devils you control gain vigilance until end of turn.
-7: You get an emblem with: "Whenever a creature enters the battlefield, you may deal 2 damage to any target." Create three blood tokens.