NPCs composing that spawngroup :

a_goblin_death_knight (50%)

a_goblin_spirit_chanter (50%)

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

nurga_101, range=36 (-1125,406,-189)

nurga_183, range=34 (-1113,373,-189)

a_goblin_blackguard (50%)
a_goblin_death_knight (50%)

va_nurga_508013, range=16 (-1132,371,-188)

va_nurga_508030, range=26 (-1129,397,-188)