Pyreheart Wolf (DKA) from Dark Ascension, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Lars Grant-West
• Card Text:
  Whenever Pyreheart Wolf attacks, each creature you control can't be blocked this turn except by two or more creatures.
  Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)