To Master your path, you must have achieved level 99, Crafted your 97 armor, and have 200,000,000 experience. You must also have 3800 hit points, and 6600 mana points, as well as two spells at the Ard level at maximum. (ie. Ard Sal 90/90) Lastly, you must obtain a Magic Ink and a Magic Scroll. You must talk to Audrey in the Temple of Choosing, then go to Jean in Loures to make your Magic Book. Then you may return to the temple and become a master.