Mask of Dispel 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, Mask of Dispel is Unlimited.
YGOPRODeck lists Mask of Dispel for these formats: GOAT, OCG GOAT, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Mask of Dispel belongs to the Mask archetype—use that tag when searching for engine pieces and tech options.
A listed print of Mask of Dispel appears in Dark Beginning 1 (DB1-EN220) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Mask of Dispel is about $0.29 on Cardmarket (prices change frequently).
