Optimised and tested, but, at the end of the day, still a meme build. If you just want efficiency and are not into combat pets, this build is probably not for you.
Base class does not matter, Warden or Necro are fine as well.
Change affix on Contingency to Intellect & Endurance if you struggle w/ sustain.
Why no Pale Order?
Pale Order does not keep your permanent pets alive. => You need a HoT (Warding Contingency) anyways.