NPCs composing that spawngroup :

a_dark_offerer (50%)

a_deathly_herald (50%)

NPCs spawning around that spawngroup :
(Max range : 100)

mistmoore_133, range=25 (-211,-122,-175)

a_jeering_gargoyle (50%)
a_leering_gargoyle (50%)

mistmoore_132, range=42 (-271,-103,-188)

an_ancille_cook (100%)

mistmoore_131, range=26 (-246,-103,-188)

an_ancille_cook (50%)
an_ancille_cook (50%)

mistmoore_130, range=77 (-187,-67,-175)

a_flouting_gargoyle (50%)
a_leering_gargoyle (50%)

mistmoore_129, range=65 (-211,-67,-175)

a_flouting_gargoyle (100%)

mistmoore_125, range=49 (-187,-122,-175)

a_flouting_gargoyle (50%)
a_leering_gargoyle (50%)

mistmoore_91, range=98 (-138,-115,-189)

mistmoore_73, range=83 (-318,-110,-189)

#Butler_Syncall (50%)
a_deathly_harbinger (50%)

mistmoore_46, range=82 (-316,-145,-189)

a_deathly_herald (50%)
a_shadowy_scribe (50%)

mistmoore_23, range=85 (-303,-74,-189)

a_dark_offerer (50%)
a_dark_sacrificer (50%)

mistmoore_16, range=80 (-159,-104,-189)

mistmoore_11, range=93 (-317,-80,-189)

a_dark_offerer (100%)

mistmoore_9, range=75 (-161,-126,-184)