BLTips has provided us a very good team combo that allows you to farm Necropolis B10 with ease! Here is the video by him.
- Fire Kobold Bomber – Zibrolta – Revenge x3(Hp%/Atk%/Acc%)
- Fire Harpu – Colleen – Violent/Revenge(Hp%/Def%/Hp%)
- Light Inugami – Belladeon – Violent/Nemesis(Spd/Hp%/Hp%) -> Not built for Necropolis
- Dark Yeti – Kumae – Violent/Revenge(Hp%/Hp%/Acc%)
- Dark Harpu – Seren – Violent/Revenge(Atk%/Atk%/Atk%)
The key is multiple attacks and also the vital slow with Kumae. All monsters are farmable except for the fire kobold bomber. You can get dark harpu and yeti from secret dungeons during hall of darkness days. Fire harpu is a simple unknown scroll drop or bought from the magic shop. Light inugami is gotten from the secret dungeon during hall of light days.