Shard of Greed is a Continuous 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, Shard of Greed is Unlimited.
YGOPRODeck lists Shard of Greed for these formats: Speed Duel, Duel Links, Common Charity, TCG, OCG, Master Duel.
Shard of Greed belongs to the Greed archetype—use that tag when searching for engine pieces and tech options.
A listed print of Shard of Greed appears in Battle Pack 2: War of the Giants (BP02-EN165) at Mosaic Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Shard of Greed is about $0.20 on Cardmarket (prices change frequently).
