United Front 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, United Front is Unlimited.
YGOPRODeck lists United Front for these formats: Duel Links, TCG, OCG, Master Duel.
A listed print of United Front appears in Generation Force (GENF-EN075) at Rare rarity.
Among markets shown on this page, the lowest listed snapshot for United Front is about $0.07 on Cardmarket (prices change frequently).
