Trigger warning: Specialist greens x3
Link: https://www.grimtools.com/calc/q2M1eP12
Ogus is a powerful mage build using mortar traps (4x, heavily buffed with Pyran’s set), 4.5-10k regen per second, inquisitor seals, phoenix fire and a low level blast shield for some damage mitigation.
The build is not unkillable - It has low physical resist (12%) and no % damage absorption making it vulnerable to spike damage from certain attacks.
The high regen and mortar traps makes it very kite-friendly. Playing from 150-160 crucible, I did die from a spike attack with Aleksander’s rock, despite standing in my inquisitor seal, so something most have gone awfully wrong there. Aside from that, I was able to get to 160 with no crucible buffs or banners within 4 minutes, so the build is overall very strong. 
A combination of circuit-breakers help to maintain health and get the best out of the regen:
Phoenix Fire, Blast Shield, Giant’s Blood (attached to blast shield, so only triggers when necessary), Prismatic Diamond at 50% hp for more damage absorption, and Tinkerer’s Ingenuity at 40% for another 200% regen. The regen from Giant’s Blood will last long enough to cover Blast Shield’s cooldown. The regen and damage absorption from PRismatic Diamond and Tinkerer’s Ingenuity help to give a boost to allow Blast Shield and Giant’s Blood come off cooldown as well, so it’s a nice cyclical system.
Enjoy!
