Xathrid Demon (M10) from Magic 2010, available at 401 Games Canada.

• Rarity: Mythic Rare
• Finish: Normal
• Artist: Wayne Reynolds
• Card Text:
  Flying, trample
  At the beginning of your upkeep, sacrifice a creature other than Xathrid Demon, then each opponent loses life equal to the sacrificed creature's power. If you can't sacrifice a creature, tap Xathrid Demon and you lose 7 life.