NPCs composing that spawngroup :

#A_Fabled_Doomfire_Chaoslord (100%)

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

a_rage_reaver_of_flame, range=18 (-1203,-479,-206)

#a_dark_magus_of_flame, range=33 (-1165,-515,-206)

#a_chaos_healer_of_flame, range=15 (-1184,-476,-206)

a_doomfire_chaosfiend, range=10 (-1187,-501,-206)