This is my [Excalibur Umbra] Elemental [Exalted Blade] Build!

The Aura mod I added is the [Steel Charge] mod. Not only it gives out the most mod slots when inserted into the Aura mod slot with the right polarity, it also increases melee attack power by 60%.

The Exilus mod I added is [Power Drift] because this adds an extra 15% to Ability Strength and has a 30% chance to automatically guard against knockdown attacks.

The three Umbral mod set - Umbral Fiber, Umbral Intensify, and Umbral Vitality - are an absolute necessity. When these three are put together, the individual mods' effects increase, giving more Armor, Ability Strength, and Health than their original counterparts.

I added [Primed Flow] for more Energy, making [Exalted Blade] last longer.

I added [Hunter Adrenaline] because this mod converts all damage done to Health into Energy, making [Exalted Blade] last even more in critical situations.

To compliment [Primed Flow], I put in [Quick Thinking] when my Health is at 2, meaning I have run out of Health. This converts the remaining Energy as a Health buffer while I run out of Health.

Finally, for this build, I added the [Chromatic Blade] Augment mod. This will now change from Physical (Slash, Puncture, and Impact) to Elemental (Cold, Heat, Electricity, and Toxin) damage depending on [Excalibur Umbra]'s primary Emissive Color and Status Chance is increased by 300% which can also be increased further with Ability Strength.

I also replaced Radial Javelin with [Protea]'s ability Dispensary which gives health and energy orbs (a must combined with Arcane Energize for further energy restoration when [Exalted Blade] is not in use). In order to get this ability, [Protea] must be subsumed to gain it.

For further attack speed, I choose Arcane Strike which increases my [Exalted Blade] attack speed by 60% since it is considered a melee weapon.

See the Exalted Blade build here