Rain Storm is a Normal Trap Card.
Trap Cards are normally Set first and can be activated on a later turn, often in response to an action.
On the current TCG and OCG Forbidden & Limited lists tracked here, Rain Storm is Unlimited.
YGOPRODeck lists Rain Storm for these formats: Duel Links, Common Charity, Edison, Speed Duel, TCG, OCG, Master Duel.
Rain Storm belongs to the Cloudian archetype—use that tag when searching for engine pieces and tech options.
A listed print of Rain Storm appears in Gladiator's Assault (GLAS-EN066) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Rain Storm is about $0.02 on Cardmarket (prices change frequently).
