I had just cleared the royal vault in the Frost Jarl caves and pulled no less than five artifacts (Wyrmlance, The Wall, Nature's Breath, robes of resistance and the potion belt.) Had already completed the old crone's quests and saved Khelavaster but then I got a bit too cocky with an ultimate doppelganger and that was it my own fault and super bummed out. Hurthling beastfighter.