NPCs composing that spawngroup :

a_goblin_death_caster (33%)

a_goblin_spirit_chanter (33%)

a_goblin_warder (34%)

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

nurga_1, range=55 (-1704,1429,-276)

#Taskmaster_Yajo (100%)

nurga_93, range=51 (-1643,1351,-273)

#Death_Knight_Donkot (20%)
a_goblin_death_knight (80%)

nurga_98, range=17 (-1673,1405,-269)

a_goblin_death_knight (50%)
a_goblin_spirit_chanter (50%)

nurga_159, range=76 (-1668,1325,-274)

a_goblin_overseer (50%)
a_goblin_overseer (50%)

nurga_160, range=76 (-1694,1335,-273)

a_goblin_death_caster (50%)
a_goblin_spirit_chanter (50%)

nurga_162, range=56 (-1676,1348,-276)

a_goblin_overseer (50%)
a_goblin_spirit_chanter (50%)

va_nurga_508003, range=3 (-1653,1400,-268)

va_nurga_508006, range=15 (-1670,1407,-268)