Galaxy Storm 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, Galaxy Storm is Unlimited.
YGOPRODeck lists Galaxy Storm for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
A listed print of Galaxy Storm appears in Order of Chaos (ORCS-EN050) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Galaxy Storm is about $0.09 on TCGPlayer (prices change frequently).
