Sisileena Chab

[202942|Ancient Spirit Essence], [202943|Study Essence] and [202944|Mirror Essence] from the [ZONE_THE RELIQUARY OF REFLECTIONS|Necropolis of Mirrors] are very useful for refining equipment.
If you can get enough crystals then you can help [ZONE_VARANAS|Varanas] improve its equipment. And I will give you a level 35 skill study certificate.
It begins when you have reached level 15 in your primary and secondary classes. Then every 5 levels you can learn a new skill.