Vitality/Acid/Poison DEE/Sigil Conjurer
Like I stated earlier Im toying around with vitality dmg recently and this is 2nd in line of vitality casters builds, first one was PB WH.
Most vitality conjurer builds in this forum are relaying solely on sigil and hitting as a dmg source, and its ok, but this build uses different combo to even better results imho.
*Spamable DEE on LMB, with constant auras + DEE and SoG
Concept of the build
As a main spamable attack this build utilizes DEE with maxed Vile eruption (rest DEE line is just 1 pt investment) to enhance vitality dmg potential of DEE.
Sigil is used as a secondary source of dmg solely to decrease kill times of hard targets (ie nemesis/bosses) in most of the game play you dont even have to use it. Measured by Fabius kill times sigil is less than 30% of your total dmg output.
This build utilizes huge vitality rr potential of devouring swarm and cof coupled with manticore to nuke vitality resistance of its target to the ground.
36% rr from CoF + 76% rr from DS + 30 rr from manticore = 142% Vitality rr
DEE toll tip break down:
You can see on upper picture that large portion of DEE dmg is Acid and poison, but acid and poison dmg are also ok since we have plenty of acid and poison rr from cof and manticore, so its far from being useless type of dmg.
What makes this build ukilable
Before I explain this part I will just state that for lulz I let Fabius hit it w/o hitting back, used BoD, totem and ToM (w/o using olerons might to reduce his dmg output or sigil/cof), and he couldn’t proc MoD for more than 1 min of hitting.
Main source of tankynes for this build as more or less usual for all caster types are devotions.
Also special attention is given to armor value and armor absorption to protect from strong physical hitters. MoD and Hood of Dreeg are crafted with +%to armor practiced skill bonus. Ancient armor plate, for even more +% to armor, is used in pants. For armor absorption scaled hide is putted in shoulders and chest armor. Total result is more than 1.3k armor with 98% absorption, pretty high considering that this build uses low armor dreeg set.
High HP regeneration (1.3 k with healing rain proc) can mitigate most of incoming dmg specially if its coupled with wendigo totem.
Also sigil and wendigo mark bound to cof are giving even more tankynes due to abundance of HP that this build is getting back trough ADCTH from those skills.
High amount of HP and high DA are also very helpful in this department.
Grim clac (+skills and devotions): http://grimcalc.com/build/1007-qDl8Vx
Grim clac (w/o +skills and devotions): http://grimcalc.com/build/1007-NspiD1
Devotion binding Wendigos mark - CoF, Acid spray - DEE, Healing rain - any aura
You can tweak this build skill points distribution ie. lower sigil investment and up DEE line point investment, invest more pts in CoF for higher radius and duration,…
Also you could change some devotions ie. change sailors guide for ell and you can get one more point to spend somewhere else. Or you can even try with more offensive setup foregoing defenses.
Attribute point distribution
Pretty straight forward, cunning and spirit to fulfill gear requirements rest in physique. This build has: Physique 65, Cunning 2, Spirit 23
Gearing/equipping this build
This build uses full Dreeg set due to its nature of boosting Vitality/P&A dmg, +2 to oculist and really useful bonuses/procs.
Skull of gulamash is bis for offhand due to its really useful stats and +3 to devouring swarm.
Rest of equipment is used to cap resistances.
Imho much better results would be obtained by switching rings to judic signet set or at least changing one to signet of fallen, but unfortunately I couldn’t cap resistances with that setup so Im using goluses rings.
Currently equipped gear
1. Head: Hood of Dreeg - leathery hide component - 7% Aether/Chaos armor augment
2. Chest: vestments of Dreeg - Scaled hide - 7% A/C
3. Shoulders: Mantle of Dreeg - Scaled hide - 7% A/C
4. Hands: Handguards of justice - Spellwoven threads- 7% A/C
5. Legs: Warding soleal sect of Kings - Ancient armor plate - 10% Lightning/7%Aether - Huge aether, bleeding and stun resistance
6. Boots: Bloodleatters exalted threads of kings - Mark of Mogdrogen - 7% A/C - Bleeding and stun resistance + nice OA bonus
7. Belt: Girdle of stolen dreams - Molten skin - 10% Fire/lightning
8. Amulet: Black gem of Dreeg - Focusing prism - 20% to all dmg 2% OA/DA
9. Ring 1 Stancing Golus ring of natures bounty - Mark of illusionist - 20% to all dmg 2% OA/DA - Huge Bleeding and elemental resistance and +1 to Mogdrogen pact
Ring 2 Impenetrable Golus ring of dreegs gaze - Corpse dust - 20% to all dmg 2% OA/DA - Huge piercing and vitality resistance and +1 DEE
10. Weapon: Runed dagger of Dreeg - Olerons blood (Rifstone could be good also) - 25% for 15% rr, 15 chaos resistance
11. Offhand Skull of gulamash - Purified salt - 10 vitality dmg, 35% vitality dmg/decay, 200 HP
12. Medal: Mark of divinity - Arcane spark
13. Relic: Solaels decimation
In closing
Compared to melee builds when fully bis geared casters are bit underdeveloped, but they do have one advantage: to work nicely they dont require much of gear and you can farm main game content with undergered caster easily. So my advice for ppl that are starting to play GD is to make some caster build as a first char and to farm with it for start.
Compared to top casters, PB, CT or dot DEE ones this build dont fall behind them and even outshines most of them in some situations, so imho this build is definitely one of the best caster options you can get in GD specially now when devastation is nerfed.
Also I really think that there is large room for improving this build, gear, skills or devotion vise so feel free to experiment with it.
Have fun playing 
Peace out!
