NPCs composing that spawngroup :

a_goblin_blight_caster (50%)

a_goblin_spirit_mystic (50%)

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

nurga_145, range=88 (-1319,-1162,-173)

nurga_191, range=93 (-1432,-1275,-173)

a_goblin_arcane_master (50%)
a_vicious_mine_rat (50%)

nurga_192, range=98 (-1421,-1187,-173)

a_goblin_arcane_master (50%)
a_goblin_spirit_mystic (50%)

nurga_193, range=33 (-1349,-1214,-173)

a_goblin_life_stealer (50%)
a_goblin_slave_driver (50%)

nurga_195, range=55 (-1387,-1281,-173)

a_goblin_blight_caster (50%)
a_goblin_spirit_mystic (50%)

va_nurga_508003, range=3 (-1341,-1244,-172)

va_nurga_508009, range=56 (-1387,-1283,-172)

va_nurga_508013, range=87 (-1321,-1162,-172)

va_nurga_508030, range=95 (-1417,-1187,-172)

va_nurga_508058, range=87 (-1258,-1225,-172)