Paradise Mantle (5DN) from Fifth Dawn, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Greg Hildebrandt
• Card Text:
  Equipped creature has “T: Add one mana of any color to your mana pool.”
  Equip 1 (1: Attach to target creature you control. Equip only as a sorcery.)