This isn't a finish build but just my take on the pretty obvious idea to use new valako with nebulis. Depending how desired valako flame / flesh is it might be the cheapest way since heist league to play a decent aura stacker. Can obviously be even cheaper as a chieftain but it feels pretty bad to only have 2 ascendancy nodes since everything else is completely useless if nothing changes. Or played as a berserker if you are a complete mad man.

Sadly with the removal of old Ngamahu chieftain has really lost it's identity as a phys to fire caster and therefore i think spark is the obvious choice as the best aura stacker main skill. If this is reverted in some way i think EK as cheiftain aura stacker could be very solid as well.

So why is this build far more economical than other aura stackers? (Scion, Champ, Inquisitor) Put simply it is very easy to reach 90 or close to 90 all res(also almost required to have mageblood just to cap res on other stackers) and you have a lot of different ways to do it. For the pob i have chosen brassdome because it's so good with jugs unbreakable and then stacking aura effect with purity of fire. Other options are getting higher aura effect from a rare chest and impossible escape on imbalanced guard or unwavering stance giving you +3 max res. Rise of the phoenix shield also gives +5 max but you lose a nebulis.

As a pure chieftain i don't think brassdome is the best and it might not be the best anyway but this is just a concept build.

While this build is very reliant on uniques, some version of this build would be easy even on ssf to put together as they are all pretty common drops.

https://pobb.in/83MokeQxqsVT