Dust Barrier is a Continuous Spell Card.
Spell Cards are usually activated from the hand on your turn unless their type gives another timing window.
On the current TCG and OCG Forbidden & Limited lists tracked here, Dust Barrier is Unlimited.
YGOPRODeck lists Dust Barrier for these formats: GOAT, OCG GOAT, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Dust Barrier appears in Ancient Sanctuary (AST-087) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Dust Barrier is about $0.07 on Cardmarket (prices change frequently).
