I hit rank 400 today and got my 10th team slot. Also beat Aamir Descended. Theurgia's increased fire orb skyfall helped me go from 8 combos to 12 on the final burst to kill Aamir.
Unfortunately I lost again on Wadatsumi because Umisachi's wood absorb was still on and he survived the burst. Tired of this dungeon.
I hate him so much (( Got him to 27% with no problem, but he healed and when I hit him again his stupid >25% insta-kill shit got me right before I used SQ. I just gave up on that dungeon.