Vexing Sphinx (CSP) from Coldsnap, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Lars Grant-West
• Card Text:
  Flying
  Cumulative upkeep—Discard a card. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
  When Vexing Sphinx is put into a graveyard from play, draw a card for each age counter on it.