Court of Justice 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, Court of Justice is Unlimited.
YGOPRODeck lists Court of Justice for these formats: Duel Links, TCG, OCG, Master Duel.
A listed print of Court of Justice appears in Legendary Collection 2: The Duel Academy Years (LC02-EN013) at Ultra Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Court of Justice is about $0.05 on Cardmarket (prices change frequently).
