Path of the Vile Destroyer

Those on the Path of the Vile Destroyer have learned throughout their long adventures the many hardships of life and each and every one of them has come to the single conclusion that they so desperately hold on to, be it from hailing a powerful deity's teaching, finding their own meaning within themselves or something completely different, it is that creation exists so destruction can triumph, the world is your playground and your weapon is an instrument of doom.

Violence Incarnate

Starting when you choose this path at 3rd level, you can go into a violent state when you rage. If you do so, for the duration of your rage any melee weapon attack you make deals extra 1d6 force damage. Additionally a Large or smaller creature you hit must succeed on a Constitution saving throw or become Prone(DC = 8 + your Strength modifier + your proficiency). If you hit an already Prone creature with your melee weapon attack, you instead deal extra 3d6 force damage.

When your violent state ends, you suffer one level of exhaustion.

Undisturbed Relaxation

Beginning at 6th level, finishing a Short Rest reduces your exhaustion level by 1, provided that you have also ingested some food and drink. While a Long Rest removes all exhaustion levels.

Additionally your Hit Dice are doubled.

 

Despicable Mania

When you reach 10th level, you gain the ability to suddenly empower yourself through sheer will and the blood of your enemies. When you do so, you can use a Bonus Action so for the rest of the turn half of the damage you've inflicted upon others is transferred over to you as hit points. If you choose to not attack or you were unsuccessful in damaging others, you instead heal for 2d6 + your Constitution modifier. 

Once you use this feature, you must finish a Long Rest before you can use it again.

Ravaging Anomaly

Reaching 14th level, your desire for destruction overwhelms you as a new power is bestowed upon you. While raging, you can use your Action to give yourself advantage for the rest of the turn and make a special melee weapon attack. Your rage ends when you do so. If the attack hits, you instead deal 12d8 force damage to the target and if they are below 100 hit points they need to succeed on a Constitution saving throw(DC = 8 + your Strength modifier + your proficiency) or be instantly slain.

You can not attack or move for the rest of the turn after you've performed this attack.
Any weapon you use for this attack below Uncommon rarity breaks in your hands after the attack is finished.
You suffer one level of exhaustion after the attack is done. 
Once you use this feature, you must finish a Long Rest before you can use it again.