I mean, what in the ACTUAL F$$K is this supposed to be? I understand the skills, however you start the rift and two seconds into it there are ranged monsters that one-shot kill you. I will never find it "challenging" or impressive that a developer or person in charge of a game would purposely setup a system where you are supposed to "feel accomplishment" at how well you can avoid the content of the game.
The trick is hit land of the dead on the opener and spam devour. I assume the person who played this build had used the numlock trick on devour to just be a running machine of death. Honestly once you figure it out I could see this being quite fun. Really sucks when mobs run out though and youre out of corpses.