Orastery Woes

The club WS quest can be activated once you reach a skill of 230. After obtaining the club of trials from Kuroido, take off the latent effect by completing 300 weapon skills with the weapon equipped (1 point per WS, 2 points on a level 1 SC, etc.).

After trading the completed club back to Kuroido, he'll tell you to head to Ro'Maeve. Once there, search for a ??? near M-8 (near the east Moon Gate entrance).

Touching the ??? will spawn Eldhrimnir, a weapon NM. Once you've defeated the NM, click the ??? again for your key item, return it to Kuroido for your new weapon skill (Black Halo).