Name: Thopter Assembly
Type: Artifact Creature — Thopter
Rules 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 put five 1/1 colorless Thopter artifact creature tokens with flying onto the battlefield.
Set/Rarity: Mirrodin Besieged Rare