This mob spawns at +174, -742, -6 in the east wing not far from The Overthere zone out. Also spawns on top of the zone out from west wing between to two golems standing there.
I tried radiant cure on my 110 sham ( max ) no dice. Blood of Tevik / Chant of the Wulthan … no go. It wasn't a bad dot … 1 group heal / group hot = easy sauce