Path of the broken

The ones who follow the path of the broken are those who have lost everything, barely clinging to whatever faith or sanity they have left. The followers of this path are usually people who have been: cursed by their former idols, cast out of the monasteries they once called home or they are monks who gain their power from other unholy entities. 

Unholy Vitality

Your accursed blood calls to you in your darkest hours. Once per 30 minutes you will automatically heal 1d10 hit points.

Corrupted mind

 At level 1 you can cast warlock spells at the cost of ki points depending on spell level (e.g. cantrips=0, lv1=1 etc) and you gain the ability to cast "Abyssal Hunger" if you fail three death saving throws instead of dying.

Black Talons

Over time, your dark thoughts manifest on your body as great, black talons form at your fingertips. at 5th level your unarmed damage is increased by +2d4 necrotic damage.

Unnatural Consumption

Your practise in using dark spells increases your efficiency when consuming souls. At 6th level when casting the spell soul drain depending on the size of what you cast it on, you will regain hit points. If cast on a: Fine, Diminutive or Tiny creature you regain +1d4 hit points. If cast on a: Small, Medium or large creature you regain +1d8 hit points. If cast on a: Huge, Gargantuan or Colossal creature you regain +1d12 hit points. If cast on a Colossal+ creature you regain +2d20 hit points.

Inner Demons

You struggle to hold back your inner thoughts. At 15th level you gain the ability to cast Abyssal Hunger and the damage you deal with your black talons increases by 2d12+4 necrotic damage.

READ THE DESCRIPTION OF ABYSSAL HUNGER BEFORE YOU CAST IT, IT COULD END YOUR CAMPAIGN.