Westin, King Of Shades

+4: Put the top 5 cards of your library into your graveyard. If any of them was a black creature target player loses 2 life and you gain 3 life.
-4: Destroy up to 5 target creatures
-15: Target player loses the game. You can use this ability only if Westin, King Of Shades has exactly 15 loyalty counters.