NPCs composing that spawngroup :

a_cursed_venomfang (100%)

NPCs spawning around that spawngroup :
(Max range : 200)

oldcommons88999, range=8 (109,3176,53)

oldcommons89004, range=0 (101,3175,56)

oldcommons89005, range=0 (101,3174,54)

oldcommons89010, range=6 (95,3179,53)

oldcommons89014, range=32 (82,3147,52)

oldcommons89015, range=33 (70,3162,52)

oldcommons89016, range=172 (237,3281,24)

oldcommons89017, range=170 (-59,3235,0)

oldcommons89029, range=164 (264,3195,17)