Rainbow Refraction is a Quick-Play 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, Rainbow Refraction is Unlimited.
YGOPRODeck lists Rainbow Refraction for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
Rainbow Refraction belongs to the Crystal Beast archetype—use that tag when searching for engine pieces and tech options.
A listed print of Rainbow Refraction appears in 2019 Gold Sarcophagus Tin Mega Pack (MP19-EN069) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Rainbow Refraction is about $0.05 on Cardmarket (prices change frequently).
