Astral Barrier is a Continuous 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, Astral Barrier is Unlimited.
YGOPRODeck lists Astral Barrier for these formats: GOAT, OCG GOAT, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Astral Barrier appears in Astral Pack One (AP01-EN025) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Astral Barrier is about $0.11 on Cardmarket (prices change frequently).
