Treasure // Manifest Token (TDSK) from Duskmourn: House of Horror, available at 401 Games Canada.

• Rarity: Token
• Finish: Normal
• Card Text:
  T, Sacrifice this artifact: Add one mana of any color.
  //
  Manifest
  You can cover a face-down manifested creature with this reminder card.
  A manifested creature card can be turned face up any time for its mana cost.