I have been camping Azys La for 4 days now - at least 12 hours a day, from when I get into work to when I go to sleep and I still haven't seen it. The fate is old content now, and all it rewards is horns so surely it wouldn't hurt anyone if the spawn rate was increased. I have seen at least 2 Ixion fates spawn in the same time I have been waiting for this one to pop with no luck