Fossil Dig 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, Fossil Dig is Unlimited.
YGOPRODeck lists Fossil Dig for these formats: Duel Links, Common Charity, Edison, Speed Duel, TCG, OCG, Master Duel.
A listed print of Fossil Dig appears in 25th Anniversary Rarity Collection (RA01-EN053) at Collector's Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Fossil Dig is about $0.07 on Cardmarket (prices change frequently).
