Thopter Assembly

Thopter Assembly
{6}

Artifact Creature - Thopter | Power/Toughness: 5 / 5 (CMC 6)
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.