Riryoku Field 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, Riryoku Field is Unlimited.
YGOPRODeck lists Riryoku Field for these formats: GOAT, OCG GOAT, Duel Links, Speed Duel, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Riryoku Field appears in Dark Beginning 2 (DB2-EN015) at Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Riryoku Field is about $0.06 on Cardmarket (prices change frequently).
