Greed 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, Greed is Unlimited.
YGOPRODeck lists Greed for these formats: GOAT, OCG GOAT, Duel Links, Edison, TCG, OCG, Master Duel.
A listed print of Greed appears in Dark Revelation Volume 3 (DR3-EN055) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Greed is about $0.46 on TCGPlayer (prices change frequently).
