Great build! I personally find the Umbra stacks a bit too much work, so my Pestilence build is 3x Lengmo (including Backbone), 1 Ceska, 2 Petrov (Contractor's gloves and a chest with Obliterate, but chest could be Grupo instead). I might replace the Ceska holster with Centurion's Scabbard when it arrives in TU22, but depends on its final stats. :)
I use the assault turret and striker drone with technician, Ninjabike backpack, picaro's holster rerolled to a skill tier, fox's prayer knees, walker harris chest with the talent glass cannon, palisade steelworks mask and gloves. I have 4 armor regen attributes and 2 crt dmg + 5 crt chc attributes/mods. So my capacitor is at 50% crt chc and 99% crt dmg. My sidearm is a tdi kard custom with the talent future perfect, cause 1 kill with the pistol will give yourself overcharge.
For solo Heroic the build is fine, but it's more of a fun build rather than anything higher than that. Unfortunately, The Chatterbox is just that, a fun gun, not a good one whatsoever. I'd say that to get higher numbers and better kills on Legendary, you should try a Dark Winter w/Obliterate for the chestpiece.
great video, i started working on the exact same build yesterday myself, although I went with the Liquid engineer BP and the belstone chest with intimidate for the bonus, running this build with Perfect bloodsucker and Intimidate allows you so much tank ability naturally that you can take 2x dps skills, 3 stacks+ of bonus armor per kill is kinda broken.
@andreibarbu-hk8qy here is my current build for heartbreaker. Heartbreaker Mask, Chest, Holster, Kneepads, Memento Backpack and Petrov Gloves for +10% LMG Damage since I'm using New Reliable. You may also use SMG if you have Dark Winter and pair it with Linked Lase Pointer that pulse targets. I have other builds on my channel which may help you on your playstyle.
Interesting build. My stats are slightly higher but I'm using Ninja bag instead of Hunter's bag + Picaro's holster / just trying this to see how will perform.
Super interested in where this will be available to obtain. I don't see them adding it to an incursion, raid or the dz. I also can see it not being in the general loot pool, given how strong the talen is. I could see them putting it behind legendary content, like the bighorn. Of course, they put St Elmo in the general loot pool, so who knows??