Sophia Card

Sophia Card is a legendary Triple Triad card.

Source
Sophia Cards can be obtained as a drop in a duty or purchased from vendors.

Duties
Sophia Cards can be obtained as a drop from the following duties:
 * Containment Bay P1T6
 * Containment Bay P1T6 (Extreme)

Vendors
Sophia Cards can be obtained during the Moogle Treasure Trove event by exchanging 7 with the following vendors:
 * Itinerant Moogle