INTRODUCTION

This build was created with the only purpose of graint major survivality and croud control as posible, at least enought to make most gamemodes like defence, arbitrations, capture, movile defence, survival, etc. Into a walk in the park, but ended up turning [Revenant] not only into an actual inmortal being, but also a support and a healer.

This is [Revenant] the fountain of inmortality

HOW THIS BUILD WORKS

With gloom you can slowdown enemy movement speed plus you can drain most of their life force, which not only can give your allies health restoration, but also granting almost total control over the enemies. Gloom slowdown and drain life force to all foes around the ratio of the pulse escalating with strenght and range, so strenght mods like [Umbral Intensify], transfient [Fortitude] and [Blind Rage] are important to slowdown the enemies and healing your teammates as much possible, overextend is really important to increase the range of the pulse at the cost of some of your strenght, but thanks to molt augmented, you can get even more strenght by only killing a few enemies
Now that we covered the thing about gloom and coming back to the rest of [Revenant] skills, with Mesmer skin you have like 15 to 18 inmunity charges with molt augmented at max, if you are surrounded by enemies plus you lost all your charges, you can use reave for run away to a safest place thanks to the increased range restoring both health and shields. The first skill is fundamental to give even more croud control because you can turn enemies on allies, and when you kill them they will leave a deadly geiser of energy that can damage enemies who walk throught them and if you cast reave against converted enemies, you can instakill them due the huge ammount of strenght

DEALING WITH EXIMUS AND ANTICROUDCONTROL ENEMIES

Saddly the gloom has some issues when dealing against enemies like eximus and infested healers, due to this reason I recomend you to have a single target weapon to kill these enemies as fast as you can, the [Knell Prime] is a go to since enemies are slowed down, you will not have an issues to activate the infinite ammo buff from this pistol, but my favorite option is the kuva chakhurr with a bleeding crit build, plus I use the [Kuva Nukor] or the [Aegrit] to deal with less beefy targets, this is my playstile but I leave it all at your preference.

RECOMMENDATIONS

You can replace overextend with the regular [Stretch] mod sacrifying most of the range of the build, use an aura forma (if its necessary) to switch [Corrosive Projection] for [Combat Discipline] and replace [Umbral Intensify] for [Umbral Vitality] so everytime you kill an enemy, you will restore health for your teammates plus you can make a weapon build more focused on melee fight.

This is my first succesfull warframe build and since most of my teammates and a veteran friend told me to share it here,
after thinking a lot about it I decided to finally doing it

Enjoy it and good luck on the grinding fellow Tennos!