I've tried to copy this but as I lack anything for Prompto I tried Garnet CSB and BSB2 which has a buff and imperil but she can't imperil with abilities so I'm anywhere between 0 and 4 imperil with magicite and BSB2.

I do have Ignis but I thought Bartz with his AASB could do more damage so had Garnet Bard Crit Chance and Valigarmand. Bartz did really well while he was in AASB and had stacks of Crit chance but in phase 3 my dps just dropped like a stone, I even had Bartz steal power to give him an extra boost. I juggled Edge and Aerith Last Stand so didn't need to entrust so how often were you feeding Sora the instant cast command?

How much damage did Prompto do for you? Was he capping easily? How many stacks of imperil did you have?

Finally, how much damage was Sora doing on his chase? His cmd2 was capping often and I think even his Blitz was just not as high.