Boompoline!! is a Continuous 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, Boompoline!! is Unlimited.
YGOPRODeck lists Boompoline!! for these formats: Common Charity, TCG, OCG, Master Duel.
A listed print of Boompoline!! appears in Chaos Impact (CHIM-EN080) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Boompoline!! is about $0.05 on Cardmarket (prices change frequently).
