[3.0] Witch Elementalist Low Life Reality Bomber (Abberath's Fury build)

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Grants Summon Harbinger of the Arcane Skill: Summons an immortal Harbinger minion. The minion will occasionally cast Arcane Surge on you, granting More Spell Damage, Cast Speed and Mana Regeneration.

Arcane Surge is a buff that lasts 4 seconds, with a cooldown of 8 seconds, and grants the following benefits:

20% more Spell Damage
20% increased Cast Speed
1% maximum Mana Regenerated per second
This buff has the same effect as a Level 21 Arcane Surge Support gem. This effect does not stack, and only one instance of the buff will affect the character.
We will throw our Heralds into another new item, a helm called The Tempest's Binding It gives both our Heralds free lvl 18 Innervate (lighting damage + shock) and Ice Bite (ice damage + freeze). It also gives us a another summon called Harbinger of Storms that does the following

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Grants Summon Harbinger of Storms Skill: Summons an immortal Harbinger minion. The minion will occasionally apply a Chill or Shock to an enemy that chains to other nearby enemies.

Chill up to 5 enemies for 4 seconds. 4 second cooldown.
Shock up to 5 enemies for 4 seconds. 4 second cooldown.

For defense we rely on our 6000+ Energy Shield (Did I not mention this build was expensive?) and ES Leech from Ghost Reaver passive on the skill tree. We also have 400-600HP while we are at 32%
life reserved, when not reserved we have around 2500 hp + our 6000 ES. We have around 10-12%
physical reduction from armor and 12-15% dodge chance from our Evasion. These numbers can be improved a lot by swapping out Armor and Evasion Utility flasks.