Sometimes, you feel the burden of your allegiances as a physical weight upon your shoulders. The allegiances of a wizard are lain down in stone in the Articles of Imperial Magic. To the Empire and the Emperor, first and foremost - easy enough. Next, theoretically, to the Supreme Patriarch, but you've yet to have any allegiance to Paranoth the Wanderer play any part in your life. Then to the laws and ideals of the Grey Order, which, well... you've always cleaved closer to the ideals than the letter of the actual laws. Then to the Patriarch, which might become relevant one day should you learn who the Patriarch actually is. Then to the 'authorities you serve in the course of your duties': to wit, Van Hal. And, finally other superiors within the Grey Order - most specifically, your Master.