NPCs composing that spawngroup :

A_Prismatic_Guardian_of_Xegony (100%)

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

poair2150015, range=56 (-96,-96,1454)

poair2150017, range=64 (-101,24,1454)

poair2150071, range=42 (-111,2,3)

poair2150301, range=91 (-187,-2,1437)

poair2150323, range=34 (-75,-21,8)

poair2150324, range=67 (-75,21,8)