Xyz Unit is a Equip 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, Xyz Unit is Unlimited.
YGOPRODeck lists Xyz Unit for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
A listed print of Xyz Unit appears in Galactic Overlord (GAOV-EN062) at Ultimate Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Xyz Unit is about $0.06 on Cardmarket (prices change frequently).
