Drop Off is a Normal 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, Drop Off is Unlimited.
YGOPRODeck lists Drop Off for these formats: GOAT, OCG GOAT, Speed Duel, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Drop Off appears in Dark Beginning 2 (DB2-EN205) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Drop Off is about $0.39 on Cardmarket (prices change frequently).
