For millenia Elven warriors have traveled either the path of the sword or the path of the arrow. Both paths inevitably lead through Eva and Einhasad...
When you are Level 20, talk to Grand Master Rains (Gludio) to become a Elven Knight. By l2hub
Steps from the game client
Testimony of Sorius
Quest that must be fulfilled in order to change occupation to Elven Knight. Tell Master Sorius that you wish to become an Elven Knight. He will order you to go to the Ruins of Agony and defeat the undead to collect pieces of topaz. The undead will include tracker skeletons, tracker skeleton leaders, skeleton scouts, skeleton bowmen, and raging spartoi.
The gemstones you have collected will be turned into a brooch for future Elven Knights. The gemstones collected by former Elven Knight applicants will shine in your heart. After receiving the Kluto Box, return to Master Sorius of the Town of Gludio.