Light of Redemption 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, Light of Redemption is Unlimited.
YGOPRODeck lists Light of Redemption for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Light of Redemption appears in Cyber Dragon Revolution Structure Deck (SDCR-EN027) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Light of Redemption is about $0.08 on Cardmarket (prices change frequently).
