Brutal Potion 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, Brutal Potion is Unlimited.
YGOPRODeck lists Brutal Potion for these formats: Duel Links, Edison, TCG, OCG, Master Duel.
A listed print of Brutal Potion appears in Yu-Gi-Oh! GX Tag Force Evolution promotional cards (GX05-EN003) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Brutal Potion is about $0.15 on Cardmarket (prices change frequently).
