Path of Death and Dispair

You have become one with your inner fury and rage and gain otherworldly power of the damned. You answer only to one thing and that is death and ruin. A messenger of death is feared and hated in the local town and cities duo their lust to kill and murder. The messenger of death is blessed or cursed depending on the actions it takes over the course of its lifespan. Furthermore will the Messenger slowly become half undead. 

Unholy Appearance

On 3th level you feel the embrace of death and Despair on and around you giving you advantage on necrotic damage saves, but does not grant half necrotic damage when succeeding the save. In addition you must choose a body part that shows signs of decay or you can let the GM decide.

Unholy presence

Also on 3rd level you start to smell slightly rotten. With death always on your shoulder you deal an extra 1d4 Necrotic damage with melee hits. 

A gift from death

Starting at 6th level you gained the gift of death making you feel otherworldly and almost invincible. Death has granted you to cast his beginner spell Spectral scythe.

Death's ward

By the start of 8th level you start to feel numb and powerful in certain places, Your mind weakens yet you remain strong and ruthless, Like death is looking through your eyes. Influencing the body and mind death is part with the creature. never has it felt such a embrace, empowering and dreadful at the same time, pure delight in the creatures eyes and nerves. Death grants the creature advantage against spell effect that mess with the mind and body. 

Death's grasp

At the 10th level you have taken alike to what death looks like and can do therefore you have chosen to inherit some of his power.
Your left body half is starting to show its bone in some spaces. Your speech is also taken back a bit, sounding more sinister. All you can think of is death and eternal life as a slave of death. 

Death Grasp: Death's Gaze

You gain the eye's of death making you a living incarnation of the art of death.

Death's Grasp: Death's summon

Death gains you the power to summon one of his loyal knight. The protector of death himself, however don't expect it to talk much since it cannot speak. The skeleton remains friendly to you and your party until it's below 30 hp, when it drops below 30 hp it becomes hostile to any target it sees.

Horrable Rotten odor

From the 10th level you reek of death, when surrounded by 2 or more creatures you can choose to release the smell of rotten flesh.

One with death

14th level is all about becoming one with the one you have been bestowed with, death. Taking an undead form  making you unable to speak, but gaining all aspects of death itself, you can conjure a scythe from the floor using the corpses as negative energy. The undead are no longer hostile to you including the skeleton knight. While wielding the scythe you can execute a creature in melee range when it is under 5% of its total HP, but attempting so you skip your next turn. They must fail the a Con save of 18.