Currently not on my desktop but a couple of quick thought when skipping over some items.
I am not sure why you call this a “Lightning Aura” build, but if you really wanna embrace that theme you can do substantial changes.
You could also fully embrace the Fire Aura theme and neglect melee dmg for the most part, this way you could redistribut a vast majority of passive points.
I would try getting crit on your weapon (and then on your gear), obviously changing Wing Guards then and incorperate at least 2 or 3 adorned idols with "chance to gain fire aura on crit) and “chance to get lightning aegis when hit”, this will give you a couple more fire auras and some decent DR from LA.
Alternatively (or evne on top of that) you could spec into Mana Strike’s Critical Rejuvination, giving it 40% base crit, but no crit multi.
In Fire Aura’s case, you want to crit in conjunction with those above mentioned idols, but you do not care for the crit multiplier anyway.
Rune Sap in Mana Strike can also be incredibly strong, when you jump into a huge pack of small monsters and jsut use Mana Strike to boost your spell damage significantly.
You might want to use 1H + Catalyst/Shield (Or DW with 1H Axe + Sword). Crescent Axe has decent base lightning dmg and more importantly lightning pen (which would affect Fire Aura).
Fire Aura’s Skill Spec Tree can give Fire Aura 15% more global dmg, while giving you one additional fire aura on activation. (Fure Aura + Eye Of Flames).
With this approach you also would want to focus more on Ward Retentio nand Intelligence.
I am also not sure why you equipped so many uniques (probably because you have them in your stash?)
You can get a lot more value out of crafted items and don’t need do craft all those legendaries.
Ward Trial is an excellent Item with a huge amount of base dodge, but if you use that, you should get 1 or 2 %inc. dodge (of the Fox) affixes.
But with a rare crafted belt, you would probably be better off, because Ward Trial is etremely good against many small enemies, which will all melt iwthin 1 or 2 ticks of Fire Aura.
Either way, you should get Ailment Cleanse on your belt, because for ward builds you can use your potions just for cleansing.
Strand Of Souls is definitely a good choice here too, which is pretty easily target farmable, jsut try getting ailment cleanse on it.
I put 3x frailty in the planner, but you only need one decent T3-4 affix on any of those slots.
I also left out all resistances, because they are interchangeable anyway.
Since you wanna run both armour blessings you might also want to get one or two mroe armour affix in there somewhere.
One thing, that is weird about Fire Aura builds, that generate a lot of their stacks from critting and Surge Dormant Engery Stacks is, that they kinda suck for low-difficulty content, when stuff dies too fast.
This build really start going off, one enemies survive a few hits, because that’s when you can upkeep 15-20 fire auras consitently.
Keep in mind, this is a substantially changed Fire Aura build and if you prefer doing some more burst dmg bith acutal melee dmg you can stay more true to your original build.
With my variant you defintiely want to stack Int and Ward Retention as much as possible as well.