Roar is one of the strongest buff in the game and this build attempts to abuse it as much as possible. Although this is primarily focused on being a solo build, Roar has enough range that it is able to hit allies as long as you stand relatively near them. We subsume an ability that increases the effectiveness of Roar or an additional buff.

Empower is chosen because it directly contributes to the strength of Roar. Other buffs may be chose if you're willing to tweak the build a bit. Elemental buffs like Nourish or Smite allow you to save slots on your weapons but may require an augment. Hybrid offensive/defensive buffs like Elemental Ward or Warcry aren't as useful as you already have plenty of survivability. [Xata]'s Whisper and Eclipse force you to overwrite Roar and aren't suggested.

Roar is extremely powerful in the right setups so you can even choose abilities that grant QoL like Energized Munitions.

[Rhino] Stomp is replaced as it's expensive and we don't have the range to justify using it. [Rhino] Charge is nearly useless as well and could also be the one replaced.

Efficiency and Range are at the minimum possible as the build shouldn't need either. If you're having issues with your energy economy you should replaced [Blind Rage] for [Augur Secrets]. Realize that this greatly reduces your damage. The polarity plan doesn't really allow many other options.

[Energy Conversion] is only used on Roar and shouldn't be too much of a burden in most content.

[Rolling Guard] protects you while you're recasting your Iron Skin or if you happen to be nullified and need some time to think. [Iron Shrapnel] is another good option but might have issues fitting into the polarity plan.

Arcane [Guardian] synergizes with Iron Skin but can be replaced with any other arcane to suit your playstyle.