Swallow Flip 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, Swallow Flip is Unlimited.
YGOPRODeck lists Swallow Flip for these formats: Duel Links, Edison, TCG, OCG, Master Duel.
A listed print of Swallow Flip appears in Raging Battle (RGBT-EN079) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Swallow Flip is about $0.58 on Cardmarket (prices change frequently).
