Crop Circles is a Normal 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, Crop Circles is Unlimited.
YGOPRODeck lists Crop Circles for these formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Crop Circles belongs to the Alien archetype—use that tag when searching for engine pieces and tech options.
A listed print of Crop Circles appears in Power of the Duelist (POTD-EN051) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Crop Circles is about $0.12 on Cardmarket (prices change frequently).
