Alright, I hear you, this is crazy. But it could work! See the PoB. No uniques or jewels of any kind needed. Easy to get spell suppress. Crit immune. Decent dam. Very tanky. Good flask recovery. Great life regen. 20% chance to avoid ele ailments from tree. Everything on lifetap to avoid mana issues. PoB has mostly trash equipment, which is what we'll be using. Some of the decent stuff is based on what I crafted using fossils from stuff I found in Delve this league.

https://pobb.in/VvK9jqmR0HFK

I put the tree together pretty quickly, I'm sure it can be optimized in terms of pathing while leveling. Let me know what you think! I'm gonna try it, just for fun!