Goblin Thief 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, Goblin Thief is Unlimited.
YGOPRODeck lists Goblin Thief for these formats: GOAT, OCG GOAT, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Goblin Thief appears in Ancient Sanctuary (AST-045) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Goblin Thief is about $0.11 on Cardmarket (prices change frequently).
