https://www.grimtools.com/calc/nZonykvV
This is an example of my health regen commando.
You need to focus on flat sources of health regen predominantly. So you need to max Veterancy and Menhir’s Bulwark and see if you have enough points to max Menhir’s Will/Overguard. On your Shaman max Mogdrogen’s Pact and Oak Skin.
Equipment - aim for the Mythical Open hand of Mercy and Closed fist of Vengeance
Equip a Fleshwarped Bulwark with hopefully an “of Mending” suffix.
There’s certain devotions you should consider as well - Behmoth, lizard, tree of life etc.
Warder’s can get to the 4-5k hp regen with enough perseverance. You should aim for around 1.5K without procs.