Bad Aim 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, Bad Aim is Unlimited.
YGOPRODeck lists Bad Aim for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
A listed print of Bad Aim appears in 2017 Mega-Tin Mega Pack (MP17-EN044) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Bad Aim is about $0.04 on Cardmarket (prices change frequently).
