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Witch
Infernalist
Reaver Destruction (Map 16+)
WitchInfernalistCreator
End Game
Build Overview
This build takes full advantages of 
Skeletal Reaver and buffs them up to do insane amounts of damage. We are also able to achieve fantastic levels of survivability through 
Altered Flesh. This build is fantastic for all forms of content as it has great boss damage and great AOE damage.
Equipment
Most of your damage is coming from you Scepter, helmet minion ranks, and chest spirit.
For defense the most important stats are going to be resistances. Try to get fire resistance cap on your shield.
On your necklace you will get a massive survivability boost if you get 
Heatproofing via the Distilled Emotions.
For your sockets look to cap out your resistances and then with your remaining sockets get maximum fire res.
Skill Gems
Support Gem Requirements:
Str 35
Dex 30
Int 55
Raise Shield
Item
Pain Offering
Skeletal Cleric
Detonate Dead
Grim Feast
Summon Infernal Hound
Skeletal Sniper
Skeletal Reaver
For your army you want 2 Skeletal Cleric, 1 Skeletal Sniper, and then full Skeletal Reaver. Grim Feast is going to generate insane amounts of Energy Shield when clearing lots of enemies, but against bosses you can drop it for an extra Skeletal Reaver if you want to.
Passive Tree
main:
122
122
set 1:
20
20
set 2:
20
20
For your ascendency get 
Beidat's Hand before 
Beidat's Will. You will have plenty of damage but you need the tankiness.
For your jewels look for Minion Elemental Resistance, Faster Start of Energy Shield Recharge, and then some minion damage.
How it Plays
The gameplay is a bit different when mapping than when fighting bosses. In both cases you want to keep up Pain Offering as much as possible. However in aoe you will be spamming Detonate Dead while against bosses you will just keep up Skeletal Sniper for the armor break. Keep in mind that 
Malice is an incredible aura from your Scepter, so try to stay relatively close to enemies to maintain the buff.
How it Works
Defensively we are making incredible use of Altered Flesh in multiple ways. The first is with the conversions of Cold and Lightning to Fire damage, which then allows us to stack Maximum Fire Resistance and mitigate a huge amount of damage. We are also able to get Heatproofing on our amulet to reduce the damage even further. In terms of Physical Damage, we make great use of armor by converting 20% of Physical Damage to Chaos Damage, and then our Summon Infernal Hound absorbs another 20% of the damage. This means our Armour is only being applied against about 60% of the damage, allowing it to heavily mitigate incoming damage even with low amounts of Armour.
