NPCs composing that spawngroup :

an_army_behemoth (16%)

greater_war_boned_skeleton (16%)

greater_war_boned_skeleton (20%)

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

citymist_76, range=81 (-150,-289,270)

a_wraith (25%)

citymist_77, range=82 (-175,-350,264)

citymist_107, range=73 (-158,-284,76)

citymist_108, range=42 (-202,-320,76)

citymist_134, range=63 (-202,-232,2)

citymist_135, range=65 (-242,-354,5)

citymista_War_Bone_Overlord00035094065, range=86 (-215,-374,20)

a_War_Bone_Overlord (10%)
greater_spurbone (90%)

citymist_223157_takp_import_v0, range=96 (-150,-341,263)

citymist_222977_takp_import_v0, range=42 (-201,-319,77)

citymist_223450_takp_import_v0, range=61 (-170,-292,76)

citymist_222966_takp_import_v0, range=64 (-241,-353,5)

citymist_222958_takp_import_v0, range=85 (-224,-374,5)