NPCs composing that spawngroup :

guardian_of_Xalgoz (33%)

skeletal_guardian (33%)

skeletal_guardian (34%)

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

kaesora_14, range=53 (-120,536,-292)

kaesora_15, range=29 (-112,560,-292)

guardian_of_Xalgoz (50%)
Xalgoz (50%)

kaesora_16, range=7 (-119,584,-291)

kaesora_17, range=69 (-48,568,-291)

kaesora_20, range=88 (-77,669,-299)

kaesora_26, range=79 (-161,654,-226)

failed_crypt_raider (10%)
spectral_guardian (90%)

kaesora_45, range=82 (-56,530,-147)

minion_of_Xalgoz (100%)

kaesora_47, range=54 (-163,614,-139)

spectral_guardian (50%)
spectral_guardian (50%)

kaesora_80, range=51 (-88,544,-153)

kaesora_84, range=38 (-93,557,-347)

kaesora_85, range=26 (-88,589,-347)

kaesora_86, range=48 (-66,582,-347)