The Chain Veil (CMM) from Commander Masters, available at 401 Games Canada.

• Rarity: Mythic Rare
• Finish: Normal
• Artist: Volkan Baǵa
• Card Text:
  At the beginning of your end step, if you didn't activate a loyalty ability of a planeswalker this turn, you lose 2 life.
  4, T: For each planeswalker you control, you may activate one of its loyalty abilities once this turn as though none of its loyalty abilities have been activated this turn.