See Empower for more information.
A crystal that adds +50 ATK to a familiar.
A crystal ball held by an ornamented golden pedestal. The crystal houses a red spirit.
ATK Crystals can be acquired through trading, ranking/point rewards in events.
Crystals can be used in the Empower menu to strenghten your familiars. A maximum of 10 crystals of each sort can be used on each familiar. The ritual of shattering the crystals claims the life of the spirit within.