Grand Horn of Heaven 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, Grand Horn of Heaven is Unlimited.
YGOPRODeck lists Grand Horn of Heaven for these formats: Common Charity, TCG, OCG, Master Duel.
A listed print of Grand Horn of Heaven appears in 2016 Mega-Tin Mega Pack (MP16-EN160) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Grand Horn of Heaven is about $0.16 on Cardmarket (prices change frequently).
