Anti-Fusion Device 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, Anti-Fusion Device is Unlimited.
YGOPRODeck lists Anti-Fusion Device for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Anti-Fusion Device belongs to the Anti archetype—use that tag when searching for engine pieces and tech options.
A listed print of Anti-Fusion Device appears in Strike of Neos (STON-EN055) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Anti-Fusion Device is about $0.11 on Cardmarket (prices change frequently).
