Crystals from the Ruins

Unlocked by

 * After the Decisive Battle

Steps to Completing

 * 1) Talk to Brynn at the Magic Laboratory.
 * 2) Get a Ruins Erg Crystal.
 * 3) *Ruins Erg Crystals can be found by breaking items in any Perilous Ruins battles.
 * 4) Talk to Brynn at the Magic Laboratory.