Trojan Blast 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, Trojan Blast is Unlimited.
YGOPRODeck lists Trojan Blast for these formats: Duel Links, Edison, TCG, OCG, Master Duel.
A listed print of Trojan Blast appears in Cyberdark Impact (CDIP-EN056) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Trojan Blast is about $0.24 on TCGPlayer (prices change frequently).
