I JUST BEAT AIGAION YESTERDAY! :D
My Team was:
A2
WoL
Rikku
Tilith
Y'shtola
Friend A2
The only TMRs i have are 2 DWs; Bowie Knife and the free TMRs, so TMRs are not really needed I think
The long part was killing the left arm 10 times, but when that was done the rest took about 10 minutes so
It wouldve been a lot faster if one of my A2s didnt constantly die so i couldnt chain unless Rikkus LB was active
It was pure routine:
I attacked with my A2
Rikku casted either her LB or Hyper Null All
WoL used "Light Is With Us" every 2 turns, the turns inbetween he attacked aigaion with basic attacks to give Rikku her LB Crystals, since the arms dont drop any
Tilith was the MP battery, occasionally full heal or when the MP was los, she was defending and recovering her MP
Y'shtola DCed Raise and Curaja on my friend A2 who died every round
-Friend A2 died and revived, occasionally when alive chained with my A2
When my A2 and tilith were low on MP, I revived my friend A2 with WoL, my A2 used Inherit Will on her and Y'shtola raised her again and casted Curaja again or when A2 survived that, Y'sh casted double Curaja
Rem, Maxwell, Vargas or Elza with reraise are great in this trial, so if you have them use them, sadly i couldn't use my Maxwell since no build gave her higher ATK than my A2, but the others might do better