Chaotic Swamp Expert Mode 11
I just used my entire stack of 50 purple combat jellies and around 15 resurrection cards and finally just gave up as there was no way I could beat the level.
I had with me 4 level 50 pure S monsters, two of them with POD, including a pure S Chunky with cunning and chill.
I tried every different combination of monsters, but often times, my monsters could not even beat Fragician, which seemed to dodge around 80-90%, to be able to even get to the level 60+ Crystal boss.
If support is reading this, please adjust CS expert mode 11 to make it at least somewhat playable. I spent over an hour trying every different combination of level 50 pure S monsters with no success.