NPCs composing that spawngroup :

a_greater_skeleton (33%)

a_necro_theurgist (34%)

a_willowisp (33%)

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

befallen_57, range=186 (-750,32,-66)

befallen_55, range=105 (-732,-65,-66)

befallen_48, range=186 (-620,-90,-67)

befallen_14, range=136 (-665,-184,-68)

befallen_12, range=187 (-975,-206,-69)

a_necro_acolyte (50%)
ice_boned_skeleton (50%)

befallen_11, range=196 (-988,-195,-69)

a_ghoul (33%)
a_shadowknight (33%)
a_zombie (34%)

befallen_10, range=190 (-986,-175,-68)

a_ghoul (50%)
ice_boned_skeleton (50%)

befallen_9, range=143 (-705,-38,-67)

befallen_8, range=153 (-645,-125,-67)

befallen_1, range=60 (-814,-206,-68)

Boondin_Babbinsbort (100%)

befallen_63, range=75 (-847,-205,-66)

befallen_65, range=101 (-706,-102,-67)

befallen_75, range=50 (-777,-102,-68)

a_ghoul (33%)
a_ghoul (33%)
a_ghoul (34%)

befallen_76, range=196 (-647,-21,-66)

befallen_78, range=136 (-852,-23,-67)

befallen_79, range=45 (-837,-127,-67)

befallen_80, range=51 (-821,-103,-66)

befallen_81, range=179 (-622,-186,-68)

befallen_82, range=95 (-851,-227,-66)

befallen_83, range=127 (-900,-73,-66)

befallen_84, range=121 (-902,-86,-66)

a_greater_skeleton (50%)
a_necro_acolyte (50%)

befallen_86, range=187 (-818,38,-67)

a_ghoul (33%)
a_ghoul (33%)
a_ghoul (34%)

befallen_104, range=174 (-623,-162,-66)