Thopter Assembly [Mirrodin Besieged] Human Soldier Warrior Overload {3}{U} (You may cast

Overload {3}{U} (You may cast this spell for its overload cost

if Clockwork Avian attacked or blocked this combat

Set: Modern Masters 2017 Type: Creature — Demon Rarity: Rare Cost: {4}{B}{B} Flying

Set: Dissension Type: Artifact Rarity: Rare Cost: {4} {3}

Set: Amonkhet Type: Creature — Sphinx Rarity: Rare Cost: {2}{U}{U} Flying

Thopter Assembly [Mirrodin Besieged] Human Soldier Warrior Overload {3}{U} (You may castSet: Mirrodin Besieged Type: Artifact Creature Thopter Rarity: Rare Cost: {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.