NPCs composing that spawngroup :

#Death_Knight_Donkot (20%)

a_goblin_death_knight (80%)

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

nurga_1, range=99 (-1704,1429,-276)

#Taskmaster_Yajo (100%)

nurga_97, range=51 (-1656,1401,-269)

nurga_98, range=61 (-1673,1405,-269)

a_goblin_death_knight (50%)
a_goblin_spirit_chanter (50%)

nurga_159, range=36 (-1668,1325,-274)

a_goblin_overseer (50%)
a_goblin_overseer (50%)

nurga_160, range=53 (-1694,1335,-273)

a_goblin_death_caster (50%)
a_goblin_spirit_chanter (50%)

nurga_162, range=33 (-1676,1348,-276)

a_goblin_overseer (50%)
a_goblin_spirit_chanter (50%)

va_nurga_508003, range=50 (-1653,1400,-268)

va_nurga_508006, range=62 (-1670,1407,-268)