Return of the Dragon Lords is a Normal 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, Return of the Dragon Lords is Unlimited.
YGOPRODeck lists Return of the Dragon Lords for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
A listed print of Return of the Dragon Lords appears in Legendary Collection Kaiba Mega Pack (LCKC-EN074) at Secret Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Return of the Dragon Lords is about $0.29 on TCGPlayer (prices change frequently).
