Mask of the Accursed is a Equip 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 the Accursed is Unlimited.
YGOPRODeck lists Mask of the Accursed for these formats: GOAT, OCG GOAT, Speed Duel, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Mask of the Accursed belongs to the Mask archetype—use that tag when searching for engine pieces and tech options.
A listed print of Mask of the Accursed appears in 2-Player Starter Set (STAS-EN026) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Mask of the Accursed is about $0.12 on Cardmarket (prices change frequently).
