Dian Keto the Cure Master 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, Dian Keto the Cure Master is Unlimited.
YGOPRODeck lists Dian Keto the Cure Master for these formats: GOAT, OCG GOAT, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Dian Keto the Cure Master appears in Starter Deck: Joey (SDJ-027) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Dian Keto the Cure Master is about $0.06 on Cardmarket (prices change frequently).
