Maweil, Beast Bleeder

+2: Until your next turn, whenever a creature attacks you or Maweil, Beast Bleeder, that creature gets -1/-1 until end of turn.
-4: Destroy target nonland permanent. Maweil deals damage equal to that permanent's converted mana cost to target creature.
-8: You get an emblem with "Whenever a creature enters the battlefield under another player's control, each opponent loses 2 life."