Heritage of the Light 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, Heritage of the Light is Unlimited.
YGOPRODeck lists Heritage of the Light for these formats: Common Charity, TCG, OCG, Master Duel.
A listed print of Heritage of the Light appears in 2022 Tin of the Pharaoh's Gods (MP22-EN186) at Ultra Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Heritage of the Light is about $0.03 on Cardmarket (prices change frequently).
