NPCs composing that spawngroup :

a_swirling_tornado (34%)

A_vind_militis (33%)

A_vind_priest (33%)

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

bothunder2090215, range=52 (358,34,1120)

bothunder2090217, range=56 (334,-13,1124)

bothunder2090220, range=54 (303,90,737)

a_swirling_tornado (50%)
A_vind_militis (50%)

bothunder2090251, range=88 (383,-7,-1481)

A_vind_militis (50%)
A_vind_vill (50%)

bothunder2090272, range=78 (228,24,-617)

A_stormrider (100%)

bothunder2090319, range=78 (228,45,-1549)

A_vind_militis (50%)
A_vind_vill (50%)

bothunder2090327, range=93 (228,-16,-1549)

A_vind_militis (100%)

AirTrapSpawner_3360589, range=63 (362,66,728)

AirTrapSpawner (100%)