Escalation of the Monarchs is a Continuous Trap Card.
Trap Cards are normally Set first and can be activated on a later turn, often in response to an action.
On the current TCG and OCG Forbidden & Limited lists tracked here, Escalation of the Monarchs is Unlimited.
YGOPRODeck lists Escalation of the Monarchs for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
Escalation of the Monarchs belongs to the Monarch archetype—use that tag when searching for engine pieces and tech options.
A listed print of Escalation of the Monarchs appears in 2015 Mega-Tin Mega Pack (MP15-EN054) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Escalation of the Monarchs is about $0.28 on Cardmarket (prices change frequently).
