Possessed Aven (TOR) from Torment, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Scott M. Fischer
• Card Text:
  Flying
  Threshold — Possessed Aven gets +1/+1, is black, and has "2B, T: Destroy target blue creature." (You have threshold as long as seven or more cards are in your graveyard.)