Aven Heartstabber - Promo Pack (PSNC) from Streets of New Capenna, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Dan Murayama Scott
• Card Text:
  Flying
  As long as there are five or more mana values among cards in your graveyard, Aven Heartstabber gets +2/+2 and has deathtouch.
  When Aven Heartstabber dies, mill two cards, then draw a card.