March of the Monarchs 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, March of the Monarchs is Unlimited.
YGOPRODeck lists March of the Monarchs for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
March of the Monarchs belongs to the Monarch archetype—use that tag when searching for engine pieces and tech options.
A listed print of March of the Monarchs appears in Cosmo Blazer (CBLZ-EN064) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for March of the Monarchs is about $0.15 on TCGPlayer (prices change frequently).
