Goblin Circus 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, Goblin Circus is Unlimited.
YGOPRODeck lists Goblin Circus for these formats: Duel Links, Speed Duel, Common Charity, TCG, OCG, Master Duel.
A listed print of Goblin Circus appears in Cosmo Blazer (CBLZ-EN067) at Short Print rarity.
Among markets shown on this page, the lowest listed snapshot for Goblin Circus is about $0.12 on Cardmarket (prices change frequently).
