Solemn Strike is a Counter 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, Solemn Strike is Unlimited.
YGOPRODeck lists Solemn Strike for these formats: Common Charity, TCG, OCG, Master Duel.
Solemn Strike belongs to the Solemn archetype—use that tag when searching for engine pieces and tech options.
A listed print of Solemn Strike appears in 2016 Mega-Tin Mega Pack (MP16-EN231) at Secret Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Solemn Strike is about $0.19 on Cardmarket (prices change frequently).
