Cup of Ace 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, Cup of Ace is Unlimited.
YGOPRODeck lists Cup of Ace for these formats: Duel Links, Common Charity, Edison, Speed Duel, TCG, OCG, Master Duel.
A listed print of Cup of Ace appears in Light of Destruction (LODT-EN050) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Cup of Ace is about $0.05 on TCGPlayer (prices change frequently).
