Double-Edged Sword Technique 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, Double-Edged Sword Technique is Unlimited.
YGOPRODeck lists Double-Edged Sword Technique for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Double-Edged Sword Technique belongs to the Six Samurai archetype—use that tag when searching for engine pieces and tech options.
A listed print of Double-Edged Sword Technique appears in Gladiator's Assault (GLAS-EN074) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Double-Edged Sword Technique is about $0.12 on Cardmarket (prices change frequently).
