Breakthrough! 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, Breakthrough! is Unlimited.
YGOPRODeck lists Breakthrough! for these formats: Duel Links, Common Charity, Edison, Speed Duel, TCG, OCG, Master Duel.
Breakthrough! belongs to the Six Samurai archetype—use that tag when searching for engine pieces and tech options.
A listed print of Breakthrough! appears in Force of the Breaker (FOTB-EN051) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Breakthrough! is about $0.22 on TCGPlayer (prices change frequently).
