Considering no umbra forma - This is supposed to be a build where you just build up for the heavy atk for a heavy dmg, wide fanned hit while the gas and corrosive work together so the dmg goes higher and higher

Good hack and slash build in a steel path survival or defensive mission I guess

Stance is flexible, I just think this stance is better for wide sweep atks

I build builds that are GENERALLY the best I can do, replace what you want with what you want such as faction mods.