Beastmaster Ascension (C14) from Commander 2014, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Alex Horley-Orlandelli
• Card Text:
  Whenever a creature you control attacks, you may put a quest counter on Beastmaster Ascension.
  As long as Beastmaster Ascension has seven or more quest counters on it, creatures you control get +5/+5.