This is a standard Machina Blitz run, with some minor adjustments to account for stage mechanics.
The premise is simple, use Ace LDCA to maintain orb while you spend a few turns to setup at the start. Then pop Choco summon to complete setup, then pop Machina BT Mode and win.
Timestamp
Party setup at 6:09
If you don't have Ace LDCA, either Xande or Sice LDCA will work.
Raines LDCA is needed to charge summon meter.
If you don't have Leo LDCA use Cait Sith LDCA
I unequipped BRV initiative, Buff Attack Speed and Peridot Thunderflash Lite Passives on Garnet to make her as slow as possible.
0:00 Setup
Reset until you get a starting turn order of Ramza, Machina, Garnet
Ramza- Ace LDCA, BT+
Machina- Double Raines to charge Choco summon meter then BT+
Garnet- BT+ then Leo LDCA
Then pop summon
2:26 Summon Mode
Try to deal damage while manipulating turns so that Machina acts last. I used Ramza's Shout to achieve this.
Machina does LD on his final turn in summon mode, which also positions him to get first turn after summon mode.
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