Grand Convergence 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, Grand Convergence is Unlimited.
YGOPRODeck lists Grand Convergence for these formats: Common Charity, Edison, Speed Duel, TCG, OCG, Master Duel.
A listed print of Grand Convergence appears in Dark Revelation Volume 4 (DR04-EN226) at Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Grand Convergence is about $0.06 on Cardmarket (prices change frequently).
