Mordolis, Soul Reaper

+2: Target player loses 1 life. Creatures that player controls get -1/-1 until end of turn.
-X: Up to X times until your next upkeep, you may pay two black mana to destroy target creature.
-9: Mordolis becomes an indestructible 5/5 Spirit creature with flying and "Pay 3 life: Target opponent loses 2 life.". He's still a planeswalker.