Urgent Synthesis 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, Urgent Synthesis is Unlimited.
YGOPRODeck lists Urgent Synthesis for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Urgent Synthesis belongs to the Koa'ki Meiru archetype—use that tag when searching for engine pieces and tech options.
A listed print of Urgent Synthesis appears in Raging Battle (RGBT-EN057) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Urgent Synthesis is about $0.05 on Cardmarket (prices change frequently).
