Relay Soul 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, Relay Soul is Unlimited.
YGOPRODeck lists Relay Soul for these formats: Common Charity, TCG, OCG, Master Duel.
A listed print of Relay Soul appears in Dragons of Legend (DRLG-EN008) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Relay Soul is about $0.04 on Cardmarket (prices change frequently).
