Novox's Prayer is a Ritual 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, Novox's Prayer is Unlimited.
YGOPRODeck lists Novox's Prayer for these formats: GOAT, OCG GOAT, Duel Links, Edison, TCG, OCG, Master Duel.
A listed print of Novox's Prayer appears in Tournament Pack: 2nd Season (TP2-008) at Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Novox's Prayer is about $4.74 on Cardmarket (prices change frequently).
