>>718665653
Been many years since I 100% TA2, but it went something like this
>Red Mage (Viera)
Have Double Spell learned
Have Summoning in second active skill slot
Have either of three elemental shields equipped (I think the reason you use Red Mage instead of Summoner is because Red Mages can equip Shields by default or something, maybe you need Shieldbearer ability otherwise)
Have Blood MP ability equipped
Have at least three base elemental summons learned (Ifrit / Shiva / Ramuh)
>Red Chocobo Knight (Moogle)
I don't really remember why it has to be Red one - higher Speed / lower HP than others / some good Chococraft skill just in case?
Have Critical: Quicken as passive (basically he always go next when he reach red HP)
Have Acrobatics in second active skill slot
Have Smile Toss learned
Have either of three elemental shields equipped
>The loop
Due to high base Speed and Move stats, move Chocobo Knight right near the closest enemy.
Move Red Mage as close as possible and Double Cast summons on both enemy and Chocobo Knight, ideally getting him to red HP.
Chocobo Knight goes next due to Quicken, and he uses Smile Toss on Red Mage.
Now Red Mage does Double Cast on enemy (to deal damage), Chocobo Knight (to heal him and then damage him to get him back to red HP to proc Quicken) and herself (to heal from HP loss spent on Double Cast) by jugglng betweens summons that heal her and Chocobo Knight through shield and summons that damage Chocobo Knight.
Boom, enemy never gets a turn because it's easy to keep the loop going.
