Opti-Camouflage Armor is a Equip 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, Opti-Camouflage Armor is Unlimited.
YGOPRODeck lists Opti-Camouflage Armor for these formats: GOAT, OCG GOAT, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Opti-Camouflage Armor appears in Ancient Sanctuary (AST-035) at Short Print rarity.
Among markets shown on this page, the lowest listed snapshot for Opti-Camouflage Armor is about $0.50 on Cardmarket (prices change frequently).
