Downbeat 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, Downbeat is Unlimited.
YGOPRODeck lists Downbeat for these formats: Duel Links, TCG, OCG, Master Duel.
A listed print of Downbeat appears in Extreme Force (EXFO-EN063) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Downbeat is about $0.14 on Cardmarket (prices change frequently).
