Magnifying Glass (SOI) from Shadows over Innistrad, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Dan Murayama Scott
• Card Text:
  T: Add C to your mana pool.
  4, T: Investigate. (Put a colorless Clue artifact token onto the battlefield with "2, Sacrifice this artifact: Draw a card.")