Dark Factory of Mass Production is a Normal Spell Card.
Spell Cards are usually activated from the hand on your turn unless their type gives another timing window.
On the current TCG and OCG Forbidden & Limited lists tracked here, Dark Factory of Mass Production is Unlimited.
YGOPRODeck lists Dark Factory of Mass Production for these formats: GOAT, OCG GOAT, Speed Duel, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Dark Factory of Mass Production appears in 2-Player Starter Set (STAX-EN028) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Dark Factory of Mass Production is about $0.11 on TCGPlayer (prices change frequently).
