Fulfillment of the Contract 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, Fulfillment of the Contract is Unlimited.
YGOPRODeck lists Fulfillment of the Contract for these formats: GOAT, OCG GOAT, Speed Duel, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Fulfillment of the Contract appears in Dark Revelation Volume 3 (DR3-EN166) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Fulfillment of the Contract is about $0.07 on Cardmarket (prices change frequently).
