Tokusano Shinkyojin 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, Tokusano Shinkyojin is Unlimited.
YGOPRODeck lists Tokusano Shinkyojin for these formats: TCG, OCG, Master Duel.
A listed print of Tokusano Shinkyojin appears in 25th Anniversary Tin: Dueling Mirrors (MP24-EN106) at Prismatic Secret Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Tokusano Shinkyojin is about $1.95 on Cardmarket (prices change frequently).
