Withering Hex (ONS) from Onslaught, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Greg Hildebrandt & Tim Hildebrandt
• Card Text:
  Whenever a player cycles a card, put a plague counter on Withering Hex.
  Enchanted creature gets -1/-1 for each plague counter on Withering Hex.