Cold Wave is a Normal Spell Card.
Spell Cards are usually activated from the hand on your turn unless their type gives another timing window.
Ban status for Cold Wave: TCG Forbidden, OCG Forbidden. Confirm the latest list for your event or online format before you main it.
YGOPRODeck lists Cold Wave for these formats: GOAT, OCG GOAT, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Cold Wave appears in Champion Pack: Game Six (CP06-EN018) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Cold Wave is about $0.46 on TCGPlayer (prices change frequently).
