DISCLAIMER: Not invincible in long endurance runs where enemies scale incredibly high.

Benefits of the build:

• Extremely tanky due to the synergy between Renewal, Hunter Adrenaline, and Quick thinking. Basically immortal in everything except endurance runs. Can stand still in Steel Path Mot AFK and easily survive.
• Very high damage and kill potential. Eclipse is a very big damage buff that allows you to easily kill most enemies.
• Easy armor strip by casting Hallowed Ground and then Reckoning. Further improves kill potential.
• Practically unlimited energy when taking a lot of damage due to Hunter Adrenaline.
• Lots of crowd control: Hallowed Ground procs radiation and makes enemies shoot each other. Reckoning picks up all nearby enemies and blinds them. Decently high range with this build.

Recommended items for this build:

• Madurai: +40% power strength and +50% casting speed
• Kitgun using Pax Bolt: +30% strength and +30% efficiency on headshot kill
• Operator Arcanes: Magus Lockdown and Magus Anomaly
• [Panzer Vulpaphyla]: Use Martyr Symbiosis, Tek Assault and Hunter Recovery. Martyr Symbiosis provides additional survivability. Stops deaths while sacrificing your Vulpaphyla, and also gives a few seconds of invincibility. Tek assault Stops your Vulpaphyla from dying which gives you a chance to proc Martyr Symbiosis again.
  Hunter Recovery Gives more heals per second to you when the Vulpaphyla does damage and spreads viral procs.

How to use:
Renewal:

• Cast renewal to proc Archon Intensify.
• Switch to operator. Dash twice to proc Madurai power strength and Magus Lockdown. Kill a standing still enemy with a headshot to proc Pax Bolt.
• Proc Growing Power.
• Deactivate Renewal then recast it with the increased power strength. Use Hallowed Ground for the armor.
• Repeat the process again when you have the max buff from Molt Augmented.

General:

• Use Eclipse whenever you need the extra damage.
• Almost always have Hallowed Ground active for the crowd control and status effect immunity.
• Use Reckoning whenever you feel overwhelmed by a lot of enemies or you want to armor strip a strong enemy. Altenatively use Magus Lockdown when overwhelmed.
• Switch to operator and back to warframe to group enemies using Magus Anomaly.

Build Variations:
There are a lot of variations with the build that you can tweak to whatever your playstyle preference is. The main goal is just to keep around 200% power strength for a full armor strip with Reckoning.

Mods:

• Blind Rage instead of Transient Fortitude if you have no problems with energy and want more strength.
• Phoenix Renewal instead of Quick Thinking if you want to give an extra life to teammates every 90 seconds. Drastically decreases your own survivability.
• Umbral Intensify instead of Archon Intensify. Archon Mods aren’t working correctly right now so it’s the better option in the meantime.
• Cunning Drift with any other exilus mod you want.
• You can add Power Drain on your parazon for even more strength. Extremely annoying and honestly not worth it to me unless you want to min max.

Arcanes:

• Arcane Guardian I don’t recommend it as the difference it makes is negligible.
• Arcane Grace Extra 22.5 heals a second. I don’t recommend it at all. Molt Augmented full buff gives renewal an extra 24 health a second while buffing other abilities as well.
• Molt Vigor for shorter runs where you won’t kill 250 enemies or want the power strength on command.

Operator:

• Naramon if you don’t need the power strength or casting speed and use a melee heavy build.
• Emergence Dissipate if you need even more energy.

Stats:
No conditionals:

• Efficiency: 100%
• Strength: 185%

Conditionals:

• Efficiency: 130%
• Strength: 370%

Renewal Full buff:

• Heals a second: 148
• Armor: 740