NPCs composing that spawngroup :

a_mangled_clairvoyant (33%)

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

griegsend1304114, range=60 (108,2827,-55)

griegsend1304121, range=79 (63,2938,-47)

griegsend1304122, range=88 (91,2968,-47)

griegsend1304123, range=60 (163,2931,-47)

Grieg_Veneficus__1432762, range=47 (129,2839,-42)

A_Dark_Sending__1432769, range=83 (74,2819,-51)

A_Dark_Sending__1432770, range=55 (151,2934,-44)

A_Dark_sending_1432862, range=82 (44,2864,-51)

A_Dark_sending_1432866, range=67 (74,2839,-52)

A_Dark_sending_1432867, range=79 (78,2952,-43)

A_Dark_sending_1432870, range=34 (97,2864,-52)

A_Dark_sending_1432881, range=30 (151,2897,-49)

A_Dark_Vision_1433051, range=94 (58,2818,-51)

A_Dark_Vision_1433057, range=53 (74,2864,-51)

A_Dark_Vision_1433079, range=22 (128,2864,-52)

A_Dark_Sending__1433161, range=10 (113,2886,-54)