A showcase on how to solo bring down Esca Falz Mother during the second cube attack phase in Mother Omnipotent, Creator on Ultra Hard difficulty.
This has a very tight window and is extremely difficult to accomplish for most classes. With Bouncer, the Twin Orochi weapon with the Slayer: Phantasm augment is mandatory here and one Jet Boots Buildup Photon Art must be used at the very end. Stirfry + Rations are also necessary.
The advantage of downing Mother is that Voltage is maintained and Mother is not moving so free damage. However, expending one BPA to accomplish this when the same BPA can be used to damage Mother instead is a major cost and so there is very little value gained from putting effort to downing Mother. For speedrun purposes, neither matters as skipping the second cube attack phase entirely is just better. For details on the second cube skip, see my full run video of the quest: https://youtu.be/-ZmLyTTg03M