You are dead. There's no going around it, you died a most horrible, unfulfilling death. Somehow, you don’t seem to be able to move on. A dissatisfied desire still anchors you to the mortal realm. You are balanced between your last living moments and the steps to the next realm. In this balance you somehow have found new dark powers, will you use them for evil or for good?

Wraiths are usually made when a mortal being dies horrible, violent death. The body and soul would be torn, leaving husks of each other filled with hatred and anger. Souls eventually become wraiths and the empty bodies become wights. In some special cases, however, the soul can latch back onto its body. This special strand of wraiths could maintain the appearance of living but the body is eternally suspended at the moment of death, the mortal wound can never be healed. 

Tainted by the Abyss

Through your death you've witnessed the abyss, allowing you to instinctively speak, write and understand Abyssal.

Dark Infusion

The corruption of the abyss has spread throughout your body. Any means of magical healing would cause this corruption to react violently, hurting you in the process. However, necrotic energy feeds it, allowing you to recover hit points.

Whenever you are the target of a magical healing spell you must do a Constitution saving throw. On a failed save, you take half the points you are supposed to recover as radiant damage. On the other hand, anytime you are dealt necrotic damage you can consume one sorcery point and instead recover the full amount that was dealt to you as Hit Points. Any other time, necrotic damage does nothing to you.

Armor of Shadows

The Abyss seeks to protect it's envoy enveloping in shadows of past wraith. Starting at 6th level, while not wearing armor your Armor Class is 10 + your Dexterity Modifier + your Charisma Modifier.

The Wraith and the Wight

Your soul channels magic while your body excels at fighting. Starting at 6th level, whenever you hit an enemy with a melee weapon attack and you have one free hand, you may consume a sorcery point and as a bonus action you may cast the Dark Grasp cantrip. Using a weapon with two hands stops you from using this feature.

You also learn the Dark Grasp cantrip and it doesn't count to the amount of spells you know.

Embracing Undeath

You have gotten use to being undead, starting at 14th level you no longer feel the need to breath, eat, drink or sleep. You can decide to rest and let your soul drift away into the abyss, where you commune with it and recover your strength.

Dark Omen

At 18th level you can channel the Abyss through you. As an Action, while consuming 1 sorcery point for each creature affected by Dark Omen, you present images of indescribable horror to your enemies. Each creature in a 60 ft. cone infront of you must make a Wisdom saving throw or become frightened for 1 minute. Whenever you deal necrotic damage to any of the creatures frightened by this ability you can add your Charisma modifier to the total damage.