Relieve Monster 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, Relieve Monster is Unlimited.
YGOPRODeck lists Relieve Monster for these formats: OCG GOAT, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Relieve Monster appears in Dark Legends (DLG1-EN094) at Ultra Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Relieve Monster is about $0.20 on TCGPlayer (prices change frequently).
