NPCs composing that spawngroup :

spectral_guardian (100%)

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

kaesora_10, range=57 (93,-440,-101)

skeletal_minion (100%)

kaesora_11, range=35 (92,-394,-99)

guardian_of_Xalgoz (50%)
skeletal_minion (50%)

kaesora_26, range=81 (136,-409,-98)

failed_crypt_raider (10%)
spectral_guardian (90%)

kaesora_37, range=194 (-55,-236,-88)

skeletal_warder (100%)
skeletal_warder (100%)

kaesora_43, range=119 (167,-441,-101)

skeletal_warder (100%)

kaesora_51, range=61 (9,-356,-101)

skeletal_warder (100%)

kaesora_52, range=122 (40,-516,-107)

kaesora_53, range=119 (63,-514,-109)

kaesora_54, range=119 (46,-514,-106)

kaesora_55, range=100 (51,-495,-109)

kaesora_66, range=78 (134,-404,-99)

spectral_guardian (100%)

kaesora_68, range=188 (219,-298,-108)

kaesora_69, range=148 (179,-312,-109)

skeletal_warder (50%)
skeletal_warder (50%)

kaesora_70, range=198 (246,-336,-108)

minion_of_Xalgoz (100%)

kaesora_72, range=162 (176,-285,-109)

minion_of_Xalgoz (50%)
skeletal_minion (50%)

kaesora_73, range=133 (150,-299,-109)

kaesora_74, range=82 (136,-371,-73)

an_iksar_spectre (50%)
a_tome_keeper (50%)

kaesora_75, range=179 (-120,-365,-109)

kaesora_87, range=72 (57,-323,-109)

kaesora_93, range=58 (115,-395,-98)

spectral_guardian (80%)
tortured_librarian (20%)

kaesora_94, range=62 (116,-415,-99)

spectral_guardian (80%)
spectral_librarian (20%)