Fusion Guard is a Counter 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, Fusion Guard is Unlimited.
YGOPRODeck lists Fusion Guard for these formats: Duel Links, Edison, TCG, OCG, Master Duel.
A listed print of Fusion Guard appears in Duelist Pack: Zane Truesdale (DP04-EN030) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Fusion Guard is about $0.29 on Cardmarket (prices change frequently).
