Casual T16 gameplay: https://www.youtube.com/watch?v=0Kro6i2iSMQ

PoB: https://pastebin.com/xRuWRkeW

I wasn't gonna post this because it is a slow and somewhat zdps HC build, but since 3.17 is buffing self cast spells including stormbind by over 45%, I might as well put this out here.

The focus of this build is tankiness. Stormbind has one of the highest base dmg to base cast time ratios. As such, you can invest almost the entirety of your gear and tree into being tanky and still do mediocre damage. My setup had 15k ES + 35k armor + 4 end charges + 26k evasion + 40% spellblock + ghost shrouds as defences.

One thing I've noticed a lot of people saying recently is that selfcast is bad because "stand still = death". I disagree, if you can get tanky enough you can stand still quite safely. This build frequently stands still for 1sec+, and has comfortably facetanked 150+ scourge stacks in HC all the time. Sirus doesnt even scratch this guy, wave 25+ kosis can sometimes chunk you but I've facetanked kosis for the most part all the way to wave 30.

Disclaimer: I eventually ripped to a Stygian Revenant DD that did over 22k dmg to me. Also I did not do Maven and Feared on HC, as I'm not comfortable with maven beams and uber atziri reflect.

EDIT: RIP Voidbringer. Now Indigon's the only real option but it uses too much mana unpredictably, so chaos damage will eventually kill you.