Sly Requisitioner (Foil) (AER) from Aether Revolt, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Foil
• Artist: Dan Murayama Scott
• Card Text:
  Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for 1.)
  Whenever a nontoken artifact you control is put into a graveyard from the battlefield, create a 1/1 colorless Servo artifact creature token.