Tonight while doing "Is It Contagious" quest, I found two contemptuous mystics in Shining City. The first repeatedly pathed back and forth between 373, 984, 218 and 821, 306, 151. I accidentally aggroed him; his hits landed for from 1396 to 6050 damage, with a lot of 5777 and various 4K hits. (My AC was about 5K.)
The second seemed stationary at 123, 998, 219.