NPCs composing that spawngroup :

a_phantom (25%)

greater_plaguebone (25%)

NPCs spawning around that spawngroup :
(Max range : 200)

citymist_39, range=175 (202,161,3)

citymist_43, range=170 (240,150,4)

citymist_44, range=79 (256,34,4)

citymist_45, range=114 (159,95,2)

citymist_46, range=150 (66,65,2)

citymist_51, range=56 (250,-9,4)

plaguebone_skeleton (100%)

citymist_55, range=172 (24,-45,2)

citymist_57, range=78 (219,-88,1)

citymist_65, range=173 (168,157,274)

a_deranged_madman (50%)

citymist_66, range=51 (143,-6,274)

a_deranged_madman (50%)
greater_plaguebone (50%)

citymist_67, range=162 (31,-24,274)

greater_war_boned_skeleton (100%)

citymist_74, range=52 (150,-42,273)

citymist_91, range=103 (280,-71,75)

citymist_114, range=153 (262,-152,147)

gyrating_goo (100%)

citymist_119, range=54 (140,-21,-9)

a_shadow (20%)
greater_spurbone (20%)

citymist_126, range=149 (252,-152,147)

citymist_133, range=190 (13,46,28)

greater_plaguebone (25%)

citymist_170, range=186 (246,-193,2)

citymist_172, range=106 (102,-67,2)

citymist_173, range=191 (115,-188,3)

citymist_275173, range=100 (260,-90,4)

Kilidna (100%)

citymist_223157_takp_import_v0, range=179 (142,158,273)

gyrating_goo (100%)
gyrating_goo (100%)

citymist_222986_takp_import_v0, range=173 (144,152,275)

citymist_222991_takp_import_v0, range=186 (190,172,273)

gyrating_goo (75%)
Wraith_of_Jaxion (25%)

citymist_222987_takp_import_v0, range=195 (190,181,274)

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

citymist_222990_takp_import_v0, range=64 (139,19,273)

a_mist_golem (50%)
greater_war_boned_skeleton (50%)

citymist_222970_takp_import_v0, range=110 (155,89,5)

citymist_223158_takp_import_v0, range=90 (278,20,75)

citymist_222973_takp_import_v0, range=191 (13,49,28)

a_fog_golem (50%)
a_vapor_golem (50%)

citymist_222975_takp_import_v0, range=42 (230,8,5)

citymist_222966_takp_import_v0, range=56 (250,-8,4)

citymist_222974_takp_import_v0, range=79 (116,-1,3)

citymist_greater_spurbone86_takp_import_v0, range=104 (91,5,3)

greater_spurbone (50%)
greater_spurbone (50%)

citymist_222958_takp_import_v0, range=189 (117,-188,5)