Grave of the Super Ancient Organism 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, Grave of the Super Ancient Organism is Unlimited.
YGOPRODeck lists Grave of the Super Ancient Organism for these formats: Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Grave of the Super Ancient Organism appears in OTS Tournament Pack 20 (OP20-EN012) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Grave of the Super Ancient Organism is about $0.14 on TCGPlayer (prices change frequently).
