Deep Sea Aria 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, Deep Sea Aria is Unlimited.
YGOPRODeck lists Deep Sea Aria for these formats: TCG, OCG, Master Duel.
A listed print of Deep Sea Aria appears in 2021 Tin of Ancient Battles (MP21-EN076) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Deep Sea Aria is about $0.18 on Cardmarket (prices change frequently).
