Danger! Zone 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, Danger! Zone is Unlimited.
YGOPRODeck lists Danger! Zone for these formats: TCG, OCG, Master Duel.
Danger! Zone belongs to the Danger! archetype—use that tag when searching for engine pieces and tech options.
A listed print of Danger! Zone appears in Cybernetic Horizon (CYHO-EN087) at Ultra Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Danger! Zone is about $0.45 on Amazon (prices change frequently).
