This build focuses heavily on spamming abilities and controlling the field. The exotic Fallen Sunstar increases your ability regeneration by picking up Ionic Traces. Ionic Traces are twice as strong with this exotic equipped, and regenerate x2 the amount of ability energy then normal. As an added bonus, allies nearby also regain ability regeneration when you collect Ionic Traces. The doubled increase in all ability regeneration allows this build to spam abilities as much as you want, without worrying about a cooldown.
Aspects
One of the most important aspects is Arc Soul. This aspect will spawn a Arc Soul to fight with you when you cast your rift. The Arc Soul is capable of Jolting targets on its own, spawning Ionic Traces to help with ability regeneration. Allies that pass through your rift will also get an Arc Soul to help them. If you are amplified, your Arc Soul will be supercharged, which will gain increase fire rate. Electrostatic Mind is very important to the entire functionality of the build, as it will create Ionic Traces from all ability kills and Jolted enemy kills. You are also amplified after collecting an Ionic Trace.
Fragments
Spark of Resistance increases your damage resistance to all incoming damage while surrounded by enemies. This makes surviving in the middle of fights much easier. Spark of Shock makes your grenade Jolt targets now, spawning Ionic Traces that provide ability regeneration. Spark of Ions will make more Ionic Traces by defeating any Jolted target. This is important as any regeneration to our abilities build into the amount of grenades/melee and rifts we can use. Spark of Magnitude increases the duration that your grenades last. This means our single grenade throw can Jolt even more targets that walk into it.
     
Arc Soul & Electrostatic Mind
Spark of Ions
Defeating jolted targets creates Ionic Traces.
Spark of Magnitude
Increase the duration of your Pulse Grenade.
Spark of Resistance
Increase damage resistance while enemies are nearby.
Spark of Shock
Pulse Grenade now jolts enemies
Healing Rift
Spawn your Arc Soul, and heal while standing in it.
Burst Glide
Best overall movement jump for the Warlock.
Ball Lightning
Throw a Arc Ball forward that releases a lightning strike.
Pulse Grenade
Best option to apply jolt to as many enemies as possible.
A very strong arc auto-rifle that plays into the arc subclass. This weapon regains ammo by sprinting, and when holding the trigger, will build up the intensity of the weapon. At max charge, it will cause explosions on targets and blind them. As an added bonus, by being amplified, you gain this charge automatically. This allows this weapon to be a very strong contender that makes using a primary slot exotic almost worth while.
Ikelos is a very strong SMG that can roll with the Voltshot perk. Highly recommended in this build.
Forbearance is a great wave frame grenade launcher. Able to do great damage and good enemy control.
Hothead is one of the best rocket launchers in the game. One of the best weapons to use against just about any boss.
     
Voltshot or Demolitionist
Any weapon with Voltshot is ideal for this build. Because Voltshot will jolt targets, creating more Ionic Traces and keeping our abilities charged. You could also get away with Demolitionist, it won’t synergize quite as well with this build, but it will help you keep your grenade energy charged.
>
>
>Â 
>
>
Arc Siphon/Harmonic Siphon
Either one of these siphons works for the build. Recommend using the less expensive one that is currently available.
Ashes to Assets
Generate super energy on grenade kills.
Font of Wisdom (opt)
Increase Intellect for a short while.
Firepower
Grenade kills create Orbs of Power
Bolstering Detonation (opt)
Generate class ability energy when dealing grenade damage.
Element Resistance
Use the appropriate element resistance that corresponds with the activity you are doing.
Arc Weapon Surge
While having active armor charges, your arc weapon damage is increased.
Innervation
Reduce grenade cooldown with each Orb of Power pickup
Absolution (opt)
Reduce all ability cooldowns with each Orb of Power pickup.
Time Dilation
You can retain armor charges for a longer period of time
Bomber
Reduce your grenade cooldown when you use your class ability
