NPCs composing that spawngroup :

a_Delve_drake (50%)

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

delvea3410052, range=88 (140,-1231,25)

delvea3410054, range=25 (39,-1183,24)

a_Delve_drake (50%)
a_Delve_drake (50%)

delvea3410056, range=89 (6,-1275,24)

a_domesticated_basilisk (50%)
a_domesticated_basilisk (50%)

delvea_monocle_1_4, range=26 (39,-1182,24)

a_Delve_evoker (50%)

delvea_monocle_1_54, range=87 (140,-1230,25)

a_Delve_drake (50%)

delvea_monocle_1_56, range=89 (6,-1274,27)

a_Delve_spellbinder (50%)

delvea_monocle_1_80, range=41 (32,-1168,23)

a_drake_egg (50%)

delvea_monocle_4_111, range=87 (140,-1230,25)

a_Delve_drake (50%)

delvea_monocle_4_119, range=89 (6,-1274,27)

a_Delve_drake (50%)

delvea_monocle_4_126, range=26 (39,-1182,24)

a_Delve_diviner (50%)

delvea_monocle_5_4, range=26 (39,-1182,24)

a_Delve_diviner (50%)

delvea_monocle_5_54, range=87 (140,-1230,25)

a_Delve_evoker (50%)

delvea_monocle_5_56, range=89 (6,-1274,27)

a_Delve_drake (50%)

delvea_monocle_5_80, range=41 (32,-1168,23)

a_drake_egg (50%)

delvea_monocle_6_11, range=77 (98,-1267,-3)

lava_rock (50%)

delvea_monocle_6_25, range=26 (39,-1182,24)

a_Delve_drake (50%)

delvea_monocle_6_75, range=87 (140,-1230,25)

a_Delve_diviner (50%)

delvea_monocle_6_77, range=89 (6,-1274,27)

a_Delve_evoker (50%)