Those Nim clones are a nightmare. You can't tank them and you can't daze them as they don't miss.
I 3*'d it with Igorok, Yoko (not knowing that Daze was useless but Blue that has HP helps), OE and Auggie. The key thing was to bring 3 energy pots and have Igorok use one in every room to freeze. I was also lucky that I had a Dhaegon 6* level 70 friend available for the boss room.
Formerly of the Potato Army. I've mostly quit playing DB. However, I can be reach in Book of Heroes (in game or forum) as bbbb.