Introduction
Lightning is perhaps the most versatile damage type for caters and I have posted different concepts around it. This is Mage Hunter with two sets, parts from three actually relying on multiple small damage sources, procs along with huge OA and crit damage. So let’s roll!
Build
- perma buffs, DPS for Chain Lightning
GRIM TOOLS : 
https://www.grimtools.com/calc/JVl1bM5Z
Gear:
Key are Ludrigan’s Pride set giving +1 skills to both masteries and lightning damage, Cataclysm set and 2 pieces of Light Defender for juicy 5% DA and lightning damage on top. Also are used:
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Relic - Iskandra. Arcanist + skills are more valuable and this relic have nice proc boosting all of my attacks.
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Pants - Barbaros. Total damage proc, both DA and OA. Physical resistance is crucial stat and I lack it on this setup. Also since I am already wearing heavy armor with LD I am not wasting many more points in physique.
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Rings - 2x Storm Witch. They have nice proc and are converting aether damage to lightning.
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Boots - Grey Magi. They are standard for Arcanist’s based casters giving both DA and spirit.
Offense:
PRM is not as effective as in Druid version but I have plenty of points, worth investing in Distortion and Supercharged for pass-through and electrocute stacking. Most of my items have procs, together with Box, Chain Lightning and devotions I have lightning soup poured on my screen 
Defense:
Mage Hunter class 
Perhaps only problem is the lack of constant physical resistance. Grey Magi and Ghoul cover this problem but it’s still matter of RNG.
Performance
Build is solid in Crucible, can die only in Nemesis waves or 169 if you are too greedy and try gather all enemies around you. Times vary depending if you got Valdaran and Maiden spawning but also very dependent of your aggression. Average time is around 6:30, my fastest run is exactly 6! Video from it: