Scattering Stroke (Foil) (LRW) from Lorwyn, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Foil
• Artist: Franz Vohwinkel
• Card Text:
  Counter target spell. Clash with an opponent. If you win, at the beginning of your next main phase, you may add X to your mana pool, where X is that spell's converted mana cost. (Each clashing player reveals the top card of his or her library, then puts that card on the top or bottom. A player wins if his or her card had a higher converted mana cost.)