NPCs composing that spawngroup :

a_mist_golem (100%)

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

citymist_50076126, range=90 (133,-352,41)

an_apparition (50%)
an_apparition (50%)

citymist_50076128, range=53 (243,-350,-15)

citymist_50076130, range=87 (152,-371,41)

citymist_50076132, range=29 (198,-334,-11)

citymist_50076133, range=51 (182,-350,63)

citymist_50076136, range=82 (210,-389,274)

citymist_50076141, range=42 (249,-326,75)

citymist_50076144, range=27 (189,-324,274)

a_fog_golem (50%)
greater_war_boned_skeleton (50%)

citymist_50076149, range=51 (258,-329,77)

a_mist_golem (50%)
a_phantom (25%)
a_phantom (25%)

citymist_50076152, range=46 (167,-291,77)

a_phantom (50%)
a_phantom (50%)
a_phantom (50%)
a_phantom (50%)

citymist_50076156, range=33 (185,-286,77)

citymist_50076158, range=88 (199,-395,273)

citymist_50076163, range=93 (119,-324,257)

a_wraith (50%)
a_wraith (50%)

citymist_50076167, range=87 (262,-378,39)

greater_spurbone (50%)
greater_spurbone (50%)

citymist_50076168, range=21 (219,-327,273)

citymist_50076169, range=79 (279,-348,75)

gyrating_goo (100%)

citymist_50076170, range=69 (147,-334,273)