NPCs composing that spawngroup :

a_goblin_arcane_master (50%)

a_vicious_mine_rat (50%)

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

nurga_192, range=88 (-1421,-1187,-173)

a_goblin_arcane_master (50%)
a_goblin_spirit_mystic (50%)

nurga_194, range=93 (-1343,-1247,-173)

a_goblin_blight_caster (50%)
a_goblin_spirit_mystic (50%)

nurga_195, range=45 (-1387,-1281,-173)

a_goblin_blight_caster (50%)
a_goblin_spirit_mystic (50%)

va_nurga_508003, range=96 (-1341,-1244,-172)

va_nurga_508009, range=45 (-1387,-1283,-172)

va_nurga_508030, range=89 (-1417,-1187,-172)