Stray Lambs is a Normal Spell Card.
Spell Cards are usually activated from the hand on your turn unless their type gives another timing window.
On the current TCG and OCG Forbidden & Limited lists tracked here, Stray Lambs is Unlimited.
YGOPRODeck lists Stray Lambs for these formats: GOAT, Speed Duel, OCG GOAT, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Stray Lambs appears in Champion Pack: Game Two (CP02-EN020) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Stray Lambs is about $0.05 on Cardmarket (prices change frequently).
