Barrel Behind the Door 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, Barrel Behind the Door is Unlimited.
YGOPRODeck lists Barrel Behind the Door for these formats: GOAT, OCG GOAT, Duel Links, Common Charity, Edison, Speed Duel, TCG, OCG, Master Duel.
A listed print of Barrel Behind the Door appears in Dark Revelation Volume 1 (DR1-EN043) at Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Barrel Behind the Door is about $0.07 on Cardmarket (prices change frequently).
