Unauthorized Reactivation is a Quick-Play 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, Unauthorized Reactivation is Unlimited.
YGOPRODeck lists Unauthorized Reactivation for these formats: Duel Links, TCG, OCG, Master Duel.
Unauthorized Reactivation belongs to the Machina archetype—use that tag when searching for engine pieces and tech options.
A listed print of Unauthorized Reactivation appears in Structure Deck: Mechanized Madness (SR10-EN041) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Unauthorized Reactivation is about $0.83 on TCGPlayer (prices change frequently).
