Thopter Assembly (DDU) from Duel Decks: Elves vs. Inventors, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Svetlin Velinov
• Card Text:
  Flying
  At the beginning of your upkeep, if you control no Thopters other than Thopter Assembly, return Thopter Assembly to its owner's hand and create five 1/1 colorless Thopter artifact creature tokens with flying.