NPCs composing that spawngroup :

#A_Swirling_Elemental_Force (3%)

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

poair2150158, range=55 (585,-1197,6)

poair2150159, range=54 (654,-1192,5)

poair2150160, range=57 (611,-1181,8)