So I've ran a whole bunch of Titan EX just for practice on DF for when my FC decides to go up for a serious run. I'm playing PLD by the way.
My problem with Titan EX is during the adds phase.
Whenever I become OT for that phase, I can never pick up the adds correctly.
This is what I've tried so far.
Titan summons adds,
- Halone on the first one
- Run to other one, Circle of Scorn/Spirits Within
- Target first add, shield lob, switch target halone(non comboed), and repeat until both adds are together then Flash.
And yes Shield Oath is on.

I'm always able to pick them up and after a few seconds I lose aggro to the healers, and everything just blows up from there with so many things going on at the same time.

Bombs pop up, Landslides, adds hitting on Healers, MT getting Mountain Bustered, etc.

Any tips would be appreciated. Thanks!