Forgotten Temple of the Deep 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, Forgotten Temple of the Deep is Unlimited.
YGOPRODeck lists Forgotten Temple of the Deep for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Forgotten Temple of the Deep belongs to the Umi archetype—use that tag when searching for engine pieces and tech options.
A listed print of Forgotten Temple of the Deep appears in Absolute Powerforce (ABPF-EN076) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Forgotten Temple of the Deep is about $0.03 on Cardmarket (prices change frequently).
