NPCs composing that spawngroup :

a_phantom (25%)

a_phantom (25%)

greater_plaguebone (25%)

greater_plaguebone (25%)

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

citymist_71, range=33 (211,-307,274)

a_mist_golem (100%)

citymist_50076126, range=84 (133,-352,41)

an_apparition (50%)
an_apparition (50%)

citymist_50076128, range=86 (243,-350,-15)

citymist_50076130, range=91 (152,-371,41)

citymist_50076132, range=49 (198,-334,-11)

citymist_50076133, range=64 (182,-350,63)

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

citymist_50076144, range=38 (189,-324,274)

a_fog_golem (50%)
greater_war_boned_skeleton (50%)

citymist_50076149, range=84 (258,-329,77)

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

citymist_50076150, range=98 (117,-357,247)

a_mist_golem (50%)
a_wraith (25%)
a_wraith (25%)

citymist_50076152, range=18 (167,-291,77)

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

citymist_50076163, range=76 (119,-324,257)

a_wraith (50%)
a_wraith (50%)

citymist_50076168, range=53 (219,-327,273)

citymist_50076169, range=97 (115,-354,75)

gyrating_goo (100%)

citymist_50076170, range=61 (147,-334,273)