I developed this build because I don't think any Pest gear is mandatory for a zNecro. This build is purely to fuel the Rat dps with more health globes. It uses NO Corpse Lance. Every skill generates more corpses to spawn more health globes. You spam Devour during LOTD. No need to try to spam 2 skills if you were to have Corpse Lance. I was running this very smoothly in GR95 Rat runs.
Please try out this build and let me know what you think. I have a good feeling that this build can push higher than the "standard" zNecro Pest build because of the survivability of Trag'Oul's and the big boost in health globe generation in between elites. Thanks!