Hammer Shot 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, Hammer Shot is Unlimited.
YGOPRODeck lists Hammer Shot for these formats: GOAT, OCG GOAT, Duel Links, Speed Duel, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Hammer Shot appears in Champion Pack: Game Five (CP05-EN017) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Hammer Shot is about $0.14 on Cardmarket (prices change frequently).
