Taking full advantage of this build's damage mitigation and leech, you can tank Uber Exarch's ball phase. Just switch to the lower damage mapping weapon so that you don't kill the minotaur too soon, and spin without moving. Or you can cheese it by logging out (another bad design by GGG).

PoB snapshot of the character in the video: https://pobb.in/FVQ_inHJ77Uq

Link to the build: https://www.pathofexile.com/forum/view-thread/3294484

Music: FAWZY - Enchanting Colors (A.R.D.I. remix)