Butterspy Protection 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, Butterspy Protection is Unlimited.
YGOPRODeck lists Butterspy Protection for these formats: Common Charity, TCG, OCG, Master Duel.
Butterspy Protection belongs to the Butterspy archetype—use that tag when searching for engine pieces and tech options.
A listed print of Butterspy Protection appears in Battle Pack 3: Monster League (BP03-EN230) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Butterspy Protection is about $0.04 on Cardmarket (prices change frequently).
