Argon Coin

A coat of golden wool from the winged ram Chrysomallos, given to King Aeëtes of Colchis by Phrixus as a token of his gratitude. Possessed by a powerful spirit, Argon Coin is capable of summoning the dragon that originally guarded it when it is thrown upon the ground. Although Caster owns this Noble Phantasm, she does not have knowledge for the incarnation of mythical beasts, so Argon Coin is never used during the 5th Holy Grail War. The name of this Noble Phantasm refers to the Argonauts, a crew of adventurers in Greek mythology who sought the Golden Fleece.