NPCs composing that spawngroup :

A_Dark_Vision (2%)

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

griegsend1304013, range=80 (-12,3252,-25)

griegsend1304014, range=92 (5,3386,-25)

griegsend1304015, range=72 (-88,3252,-25)

griegsend1304016, range=27 (-82,3332,-25)

a_shrouded_willsapper (50%)
a_shrouded_willsapper (50%)

griegsend1304017, range=91 (-58,3409,-7)

griegsend1304041, range=59 (-111,3291,-34)

A_Dark_sending_1432840, range=20 (-58,3338,-13)

A_Dark_Sending_ (2%)

A_Dark_Vision_1432990, range=94 (-109,3398,-3)

A_Dark_Sending_ (2%)
A_Dark_Vision (2%)

A_Dark_Sending__1433148, range=67 (-84,3380,-5)

A_Dark_Sending__1433154, range=65 (-54,3253,-23)

A_Dark_Sending_ (2%)