NPCs composing that spawngroup :

a_black_reaver (100%)

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

citymist_3, range=40 (0,387,94)

#Tzirathk (30%)
a_black_reaver (70%)

citymist_5, range=19 (20,368,4)

citymist_8, range=45 (-11,387,75)

citymist_9, range=37 (11,387,77)

citymist_11, range=91 (28,440,3)

citymist_12, range=55 (21,405,4)

citymist_13, range=66 (-21,405,4)

citymist_14, range=37 (22,387,4)

citymist_17, range=42 (-22,369,4)

citymist_18, range=51 (-20,387,4)

citymist_22, range=95 (-46,277,4)

citymist_23, range=76 (35,276,3)

a_mist_golem (33%)
greater_war_boned_skeleton (33%)

citymist_63, range=91 (89,295,4)

citymist_a_black_reaver2_takp_import_v0, range=40 (0,387,94)

citymist_223157_takp_import_v0, range=57 (-25,391,81)

gyrating_goo (100%)

citymist_222986_takp_import_v0, range=45 (-10,387,77)

citymist_222983_takp_import_v0, range=35 (-1,319,96)

a_black_reaver (100%)

citymist_222992_takp_import_v0, range=27 (0,372,94)

a_fog_golem (50%)
a_wraith (25%)
a_wraith (25%)

citymist_222970_takp_import_v0, range=19 (21,369,3)

citymist_222979_takp_import_v0, range=72 (1,421,6)

a_black_reaver (100%)

citymist_greater_plaguebone12_takp_import_v0, range=37 (22,387,3)

greater_plaguebone (50%)
greater_plaguebone (50%)

citymist_222978_takp_import_v0, range=65 (-20,405,4)

a_fog_golem (50%)
a_fog_golem (50%)
a_phantom (25%)
a_phantom (25%)
a_phantom (25%)
a_phantom (25%)

citymist_a_black_reaver005_10091865, range=71 (1,420,5)

a_black_reaver (100%)

citymist_a_black_reaver005_10244843, range=32 (-1,322,95)

a_black_reaver (100%)