The master mages, Celdiseth, Shoyanen, and Fadsahil are among the most advanced practicioners of magic on Dereth, baring various Empyrians. Each of them has a shop where they sell spell componants, peas, portal gems, and other useful supplies at very low rates.
Celdiseth can be found in far northern Osteth, at 86.6n, 21.6e, north of Neydissa Castle.
Shoyanen makes her home in a tower just outside Mayoi, at 63.5s, 85.9e.
Fadsahil was driven out of his shop between Xarabydun and Al-Arqas at 40.8s, 11.8e, and now operates from a tent over the hill to the west of his old location.