Argon Coin: The Golden Fleece (金羊の皮アルゴンコイン, Kin'yō no KawaArugon Koin?) is a coat of golden fleece from the winged ram Chrysomallos, given to King Aeëtes of Colchis by Phrixus as a token of his gratitude. It was possessed by Medea, the princess of Colchis, and she was made to blindly love Jason, who was sent to Colchis to retrieve it, by the goddess Aphrodite in order to defeat King Aeëtes. She nullified her father's magic, allowing Jason to obtain it. It is inhabited by a strange Guardian Spirit, similarly to the Seventh Holy Scripture. Caster does not possess it as an active or sealed Noble Phantasm, but instead as a Skill.