Dreadhorde Butcher (WAR) from War of the Spark, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Piotr Dura
• Card Text:
  Haste
  Whenever Dreadhorde Butcher deals combat damage to a player or planeswalker, put a +1/+1 counter on Dreadhorde Butcher.
  When Dreadhorde Butcher dies, it deals damage equal to its power to any target.