Aegis of Gaia is a Continuous Trap Card.
Trap Cards are normally Set first and can be activated on a later turn, often in response to an action.
On the current TCG and OCG Forbidden & Limited lists tracked here, Aegis of Gaia is Unlimited.
YGOPRODeck lists Aegis of Gaia for these formats: Duel Links, Common Charity, Edison, Speed Duel, TCG, OCG, Master Duel.
A listed print of Aegis of Gaia appears in Gold Series 3 (GLD3-EN050) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Aegis of Gaia is about $0.09 on Cardmarket (prices change frequently).
