Polish

See also: Enhancing

Main Sources:

 * 1) From raid dungeons (3/day, can run 7 characters over 1h and repeat every 3h)
 * 2) From duo dungeons (farmable)
 * 3) From hell content (farmable)
 * 4) From Gate of the Gead (GotD)
 * 5) Events such as [LiveOPs events]
 * 6) From trophy shop (such as trophy shop no.10 and 11)
 * 7) From general shop
 * 8) As part of bundles in general shop/lobby shop