Okay, so, like, I built a whole loadout just to fight him. Brainstormer, Storm, a shock and nuclear Spinner, Kill of The Wisp, but this started with just the Brainstormer. I was trying to use Ties That Bind and the Brainstormer to kill him in the first few seconds, by hopefully sharing damage back from the decoys. I wear a Transformer so when I mess up, the generators health my shield during the fight.
But while doing this, I did two other things. I picked the Revelation Augment in the brawl tree that creates a nova on Action skill damaging an enemy, and I put on a Nimbus class mod to create a cloud of action skills element on enemy damage.
I can’t for sure say what happens here. But I think: I am hitting the Ties that Bind just as the clones summon. The nova pops the generator, and the damage share between the action skill immune damage, the nova, the generator burst, and the Nimbus cloud all creates a burst of damage that eats his shield than him.
I know when I took the Nimbus off, I failed at this on M3. I also was using a visual cue which was hit or miss. Now I use an audio cue and get it almost every time
Note: there is a fraction of a second where this works. It’s an oddly precise thing. I have watched in horror as I do absolutely nothing with this because I did it too soon, or just kinda eat his shield for being late