Swallowtail Butterspy is a Warrior Effect Monster with Attribute DARK, Level 4, ATK 1800, DEF 1200.
Monster cards contest the field through Summons, battles, and effects—check Level/Rank/Link and Attribute for Extra Deck or searchers.
On the current TCG and OCG Forbidden & Limited lists tracked here, Swallowtail Butterspy is Unlimited.
YGOPRODeck lists Swallowtail Butterspy for these formats: Duel Links, Common Charity, TCG, OCG, Master Duel.
Swallowtail Butterspy belongs to the Butterspy archetype—use that tag when searching for engine pieces and tech options.
A listed print of Swallowtail Butterspy appears in Galactic Overlord (GAOV-EN013) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Swallowtail Butterspy is about $0.05 on Cardmarket (prices change frequently).
