Senri Eye 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, Senri Eye is Unlimited.
YGOPRODeck lists Senri Eye for these formats: GOAT, OCG GOAT, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Senri Eye appears in Dark Revelation Volume 1 (DR1-EN144) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Senri Eye is about $0.03 on Cardmarket (prices change frequently).
