Decided to see these dropped anything. Spiritist Kriana is social and will assist. 65 monk lull would not affect her. But it was an easy split using FD.
The fight: about 6 minutes doing approx 250dps. No special attacks from mob at all, just a huge innate regen. At about 8pct it walked directly north. Had alot more HP/regen than I expected. Took a Guardians of Shar Vahl faction hit. I was amible before and after kill, so its not that big.
As for loot...big fat nada for the one kill I made.