Assault on GHQ 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, Assault on GHQ is Unlimited.
YGOPRODeck lists Assault on GHQ for these formats: GOAT, OCG GOAT, Duel Links, Speed Duel, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Assault on GHQ appears in Dark Revelation Volume 3 (DR3-EN176) at Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Assault on GHQ is about $0.07 on Cardmarket (prices change frequently).
