Titan is down! I repeat, Titan has fallen!!!
Whew. It took me around ~40 attempts to finally beat this SoB. Managed it 51:80. Had to cave and do the CSB select draw to grab Faris' CSB but
C'est la vie.
Spoiler: Party and very rough turn order
Show
Faris - Wrath/Entrust - CSB/USB1/Glint+ - Battleforged
Cloud - Lifesiphon/Raging Quadstrike - USB1/USB2/AASB/AOSB/Glint+ - Scholar's Boon
Tyro - Wrath/Entrust - USB3/USB4 - Dr Mogs
Elarra - Warrior's Hymn/Passionate Salsa - USB1/USB2/AASB - Mako Might
Zidane - Lifesiphon/Storm Assault - USB2/AASB/OSB/Glint - World Traveler
RW: Fabula Nuke
So basically, spend the first 20 seconds getting Faris, Zidane, and Cloud to full bars, Tyro Godwalls, wraths then uses USB3, Elarra keeps everyone up with USB1 and when you're ready, unleash.
Cloud - Glint+ BEFORE CSB goes off, USB2 > USB1 > RQ >AOSB >AASB >RQx2 > USB1
Faris - CSB > USB1x2 >wrath until CSB expires > CSB > USB1 > wrath and entrust to Cloud
Tyro - Wrath and entrust to Cloud, maybe 2 bars to Elarra
Elarra - AASB > WH > PS >USB2 before Cloud AOSB > USB1 > spam WH
Zidane - Glint before CSB > USB2 > AASB > SA > delay until after Cloud AOSB > RW Nuke > SA > OSB > USB2
I'm not positive on the turn order because I honestly didn't think I'd win. Mostly went in as another experiment. Did bring Syldra but ended up not even using it between Faris and Zidane imperils. Oh well. It worked and was oddly a comfortable clear so I can probably replicate it easily enough (famous last words).
Now to kill him 3 more times! Should be a bit easier as once you that first kill and put the magicite in your deck, you get like a 10% bonus damage /damage reduction in subsequent fights.
Edit: Didn't see danzibrs edits. Grats. Beat me by only a few hours on the kill