Dark World Grimoire 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, Dark World Grimoire is Unlimited.
YGOPRODeck lists Dark World Grimoire for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Dark World Grimoire belongs to the Dark World archetype—use that tag when searching for engine pieces and tech options.
A listed print of Dark World Grimoire appears in Legendary Collection 4: Joey's World Mega Pack (LCJW-EN252) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Dark World Grimoire is about $0.28 on Cardmarket (prices change frequently).
