Oswald Fiddlebender - Rulebook Showcase (AFR) from Adventures in the Forgotten Realms, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Phil Stone
• Card Text:
  Magical Tinkering — W, T, Sacrifice an artifact: Search your library for an artifact card with mana value equal to 1 plus the sacrificed artifact's mana value, put it onto the battlefield, then shuffle. Activate this ability only as a sorcery.