Slumbering Dragon (M13) from Magic 2013, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Chris Rahn
• Card Text:
  Flying
  Slumbering Dragon can't attack or block unless it has five or more +1/+1 counters on it.
  Whenever a creature attacks you or a planeswalker you control, put a +1/+1 counter on Slumbering Dragon.