Hi and welcome to first build post of mine. I have read around a bit and I learned that you wanna see what has already been posted and also post at least pictures of some build performance. Let me know if this is good build post when it comes to structure and presentation. Also English is not my best language but perhaps you guys and girls understand.
On this build I wanted to re-explore old ”classical” mortar build which focuses on health regen and very high DA (this was before the DA chance to hit-cap was introduced in game). Note that I do not take the high DA concept for this build, only mortars and health regen.
Name of character suggest that he rises like the bird phoenix from the ashes. The phoenix devotion is sadly not included in the build
Some Mortar purifiers has been posted before, but all of them seemed pretty glass cannon and had no notable health regeneration. Still reader of this build could consider them too see further down for links. Let me know if I have missed give credit to someone.
I play self found gear, and all alone. I only use GD stash for saving items and searching for them. I level up my chars using speed level technique similar to Rektbyprotoss. My build-style is to try and make non-standard builds often centered around a concept or fun item that I find and not sets and such. Sometimes build won’t work but sometimes you get nice surprises which I like.
GrimTools link https://www.grimtools.com/calc/eZP1WEJN 
(original version of build)
GrimTools link https://www.grimtools.com/calc/0V0eQj9Z More focus on Big One and additional summon of mortar. Damage increase but not sure if because of Big one or just one extra mortar.
GrimTools link https://www.grimtools.com/calc/pZrmDa6V newest version with 6 mortar traps. Faster build. Strong for 75 -76 farming.
Version with Kalastor rune instead of many points in big one, https://www.grimtools.com/calc/nZoQO6B2 but one more button to press. Good damage!
As you can see around 3000 health regen per second at base.
Items:
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Terrnox off-hand which I got Destroyer prefix for the nice physical resistance.
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Gollus rings for health regen and bonus to vindcitive flames – I choose from my ”collection” the onces that gave best OA. Here build can be improved a bit.
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Mythical Anderos amplifier gun
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Mythical mark of calamatious desires medal
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Demolitionist conduit amulet with bonus heal to vindictive flame
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Pyran helm for conversion and mortar bonus (Mythical mask of infernal truth for +1 summon of mortar)
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Shoulders for conversion on tip of scales and bat (better heal if you convert damage)
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Chest for conversion on bat – I took tanky prefix build can be improved here too.
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Gloves and belt for + to inquisitor seal in original version (Mythical Dawnshard glove for +1 summon of mortar)
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Pants and boots decent defensive ones.
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Relic I wanted to take Bane first but ended up with Ignaffar
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Helm change also gave one more summon on Mortar.
Depending on what affixes you get one rings, off-hand and chest, you can make both better and worse version of build 
Everything is easy to get except Gollus rings because he is long road to kill and not high drop chance. I have around 40 of his rings and those was best I had for this build.
Components and Augments:
- As you can see I tried to use some that gave bonus to health regen, but also to conver resistaneces, OA and DA.
Skills:
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Maxing out Vindictive flame and Mortar was pretty obvious.
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I took Word of pain for casting bat. Easy to spray around to many monsters.
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Blackwater cocktail for DA removal on monsters. Not sure if this is great idea and should put more points in Deadly aim or not.
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Still not sure if Big One is worth focus on. Sorc build with earlier patch said it was garbage [1.1.6.2] MEGASORC - BwC+Canister+Mortars Super Duper Tanky Sorcerer (c5:30 average) (sr80 no aggro abuse)
Devotions:
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Healing from bat, tip of scales, dryad and Behemot.
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Resistance reduction from solael witchfire and tip of scales
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Damage from Ulzuin Torch
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The Harvest schythe was taken for health regen and some DA
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Tortiose for a damage absorb shield. Maybe not good idea.
Performance:
For original build.
Build just tanks most of the stuff in main game like Morgoneth, Mad Queen, Kravall, Lokarr and all the skeleton key dungeon bosses.
Mogdrogen - for him I did change some augments and stuff to get higher DA, fight took about 7-8 min.
Ravager - I was needed to kite here and there but after some time he dropped dead.
Calla - not tried yet, will probably need 20 minutes of kiting like headless chicken and same with crate boss…
Shattered Realm (SR) – can do at least 80 but you need some luck with nemesis spawns at these high shards. I have died a few times but most of time I success. Farming SR 65-66 is not super quick but is very comfortable and it gets the job done if you wanna get some new fun items.
Crucible it performs very poor due to pretty low damage.
Picture of boss room done after SR 66
Picture of boss room done after SR 80
In this room I had Aleksander and Benjarr. Also ishtak and perhaps one more guy. Just pick them off one by one.
For performance of the other versions, see in this thread down below.
Playstyle:
Most of time just stand on seal and cast stuff. Sometime you need to kite some and use medal augment skill to avoid large hits like Aleksander meteor.
Leveling
I leveled this char “speed level” style using tokens, Lokarrs set and experience potions. I played with word of pain & included blackwater cocktail for most of the time until I got to level 94 in about 8 hours or so. I still try to improve this method and my execution of it but it is not main focus for my playing 
You guys wanna check out Rektbyprotoss video guides on youtube if you wanna learn more.
This concludes build, thanks for reading let me know if you have questions or suggestions of improvements.
Build credits:
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Here is a recent similar build with Pyran set [1.1.8.1] OGUS (Fire God) - 4x Mortar, 10,000 Regen : Cr150-160 no cruci buffs/banners
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https://forums.crateentertainment.com/t/1-1-5-2-fire-mortar-purifier-volcano/94603
