Unnerving Assault (Foil) (EVE) from Eventide, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Foil
• Artist: Ron Spencer
• Card Text:
  Creatures your opponents control get -1/-0 until end of turn if U was spent to play Unnerving Assault, and creatures you control get +1/+0 until end of turn if R was spent to play it. (Do both if UR was spent.)