Agonizing Demise (DDH) from Duel Decks: Ajani vs. Nicol Bolas, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Mark Brill
• Card Text:
  Kicker 1R (You may pay an additional 1R as you cast this spell.)
  Destroy target nonblack creature. It can't be regenerated. If Agonizing Demise was kicked, it deals damage equal to that creature's power to the creature's controller.