Synchro Change 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, Synchro Change is Unlimited.
YGOPRODeck lists Synchro Change for these formats: Duel Links, Edison, TCG, OCG, Master Duel.
A listed print of Synchro Change appears in Crimson Crisis (CRMS-EN089) at Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Synchro Change is about $0.11 on TCGPlayer (prices change frequently).
