Massacre Wurm (MKC) from Murders at Karlov Manor Commander, available at 401 Games Canada.

• Rarity: Mythic Rare
• Finish: Normal
• Artist: Jason Chan
• Card Text:
  When Massacre Wurm enters the battlefield, creatures your opponents control get -2/-2 until end of turn.
  Whenever a creature an opponent controls dies, that player loses 2 life.