How to make Demon Hunter viable? Entering Fatigue Demon Hunter.

The combo for doing so is having Zai, the Incredible die so that you can rez him with Body Wrapper, and he can copy Wrappers to continue the cycle. In conjunction with Jace Darkweaver, you get to push even more damage/stall for longer, and you can Discover him from Wrapper or get copies of him from Zai to get the chain going as an alternative.