Oasis of Dragon Souls is a Continuous Trap Card.
Trap Cards are normally Set first and can be activated on a later turn, often in response to an action.
On the current TCG and OCG Forbidden & Limited lists tracked here, Oasis of Dragon Souls is Unlimited.
YGOPRODeck lists Oasis of Dragon Souls for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
A listed print of Oasis of Dragon Souls appears in OTS Tournament Pack 3 (OP03-EN013) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Oasis of Dragon Souls is about $0.11 on TCGPlayer (prices change frequently).
