NPCs composing that spawngroup :

minion_of_Xalgoz (33%)

ravener (34%)

spectral_guardian (33%)

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

kaesora_26, range=52 (297,-153,-123)

failed_crypt_raider (10%)
spectral_guardian (90%)

kaesora_27, range=187 (344,-8,3)

kaesora_29, range=169 (97,-85,3)

kaesora_31, range=145 (126,-83,3)

kaesora_32, range=53 (215,-210,-113)

kaesora_33, range=135 (111,-168,-27)

kaesora_34, range=130 (120,-200,-29)

kaesora_35, range=93 (153,-169,-27)

kaesora_60, range=120 (153,-89,3)

kaesora_61, range=31 (242,-135,-125)

kaesora_63, range=126 (296,-50,-173)

skeletal_minion (100%)

kaesora_64, range=119 (198,-57,-125)

skeletal_minion (100%)

kaesora_67, range=136 (258,-302,-108)

kaesora_68, range=134 (219,-298,-108)

kaesora_69, range=159 (179,-312,-109)

skeletal_warder (50%)
skeletal_warder (50%)

kaesora_70, range=169 (246,-336,-108)

minion_of_Xalgoz (100%)

kaesora_71, range=175 (263,-341,-106)

kaesora_72, range=138 (176,-285,-109)

minion_of_Xalgoz (50%)
skeletal_minion (50%)

kaesora_73, range=164 (150,-299,-109)

kaesora_88, range=31 (247,-197,3)

kaesora_89, range=116 (341,-98,5)

kaesora_91, range=47 (284,-195,3)