Here's the pob for it. Basically the premise behind this char is that it stacks mana to convert into more phys dmg. From there that phys damage is converted into lightning and cold damage.

Other than that, there's an explodey chest and some stacking of area of effect for explosion overlaps from the chest and from the kinetic blast.

I gotta say this is my favorite character I whipped up. Shout out to Palsteron in getting me to make the initial character. My passive tree is a good bit different though and I don't use Indigon. The passive tree was tweaked more to get the left side of the tree which he didn't get but I think it's great to get those nodes because the unnatural instict just adds so much. Plus there's a good bit of mana over there.

If you have any questions on the build shoot away and I'll help out. It's def good for alva farming and I personally farm giant rogue exiles with it. It is a glass cannon though so to be safe, just spray a screen away and you should be fine. In my video I was kind of quickly one tapping the skill but really you'd want to spray a bit before moving again I'd say.