Unicorn Beacon 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, Unicorn Beacon is Unlimited.
YGOPRODeck lists Unicorn Beacon for these formats: Duel Links, TCG, OCG, Master Duel.
A listed print of Unicorn Beacon appears in Duelist Revolution (DREV-EN055) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Unicorn Beacon is about $0.28 on TCGPlayer (prices change frequently).
