NPCs composing that spawngroup :

a_goblin_life_stealer (50%)

a_goblin_slave_driver (50%)

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

nurga_25, range=74 (-1454,-1070,-173)

a_goblin_life_stealer (50%)
a_goblin_stabber (50%)

nurga_34, range=36 (-1481,-1014,-173)

a_goblin_arcane_master (100%)

nurga_46, range=57 (-1505,-983,-221)

a_goblin_gold_hoarder (100%)

nurga_47, range=84 (-1527,-964,-221)

a_goblin_blightcaller (50%)
a_goblin_frost_caller (50%)

nurga_48, range=99 (-1548,-993,-221)

a_goblin_blightcaller (50%)
a_goblin_frost_caller (50%)

nurga_147, range=90 (-1383,-1058,-173)

a_goblin_blood_knight (50%)
a_goblin_taskmaster (50%)

nurga_148, range=92 (-1357,-988,-173)

a_goblin_blood_knight (50%)
a_goblin_flame_dancer (50%)

va_nurga_508003, range=57 (-1504,-979,-220)

va_nurga_508009, range=59 (-1396,-970,-172)

va_nurga_508047, range=2 (-1448,-998,-172)