A violent death or certain ritualistic sacrifices, often leaves behind a trace of the soul. This silver can grow in malice and strength until it becomes a powerful undead spirit known as a Wraith. These Wraiths are as unique as the people they once were and although their memories might fade over time becoming little more than faint impressions, fleeting as half-remembered dream each wraith will have their own goals and desires that they latch onto sometimes forgetting the very reason they're on this path, but without a corporal body they struggle to complete their chosen tasks.

When this happens the Wraith may look for somebody to bind with, offering them power and knowledge in exchange for them helping the Wraith accomplish their final goals. Your Patron is one such creature, an undead spectre whose soul was trapped on the mortal plane. It's motives are usually linked to strong emotions that have remained even when all else has faded, such as a strong desire to protect a bloodline or an urge to avenge a fallen friend or even take revenge for their own death. 

Expanded Spell List

The Wraith lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

Fiend Expanded Spells

SPELL LEVEL	SPELLS
1st	false life, shield
2nd	blur, spiritual weapon
3rd	blink, speak with dead
4th	dominate beast, phantasmal killer
5th	dominate person, geas

Lingering Prowess

Starting at 1st level, you gain proficiency with medium armor, a martial weapon of your choice and one skill/tool from the wraith's past life.

You also gain the ability to put yourself into a meditative trance during a short rest to ask your wraith three questions, the wraith will answer these question to the best of it's knowledge. Once you use this feature you can't use it again until you take a long rest.

Power of Two

Starting at 6th level, you can give yourself over to the wraith within to increase your odds of success. For the next 1 minute you can give yourself advantage on any ability checks. Once you use this feature you can't use it again until you take a long rest.

Entwined Souls

Starting at 10th level, the spirit of the wraith helps to anchor you to the world of the living.

You gain advantage on death saving throws and the first time you are reduced to 0 hit points but not killed outright, you can immediately spend a hit dice to regain health. You can’t use this feature again until you finish a long rest. 

In addition, you age at a slower rate, for every 10 years that pass, your body ages only 1 year.

Shadow Strikes

Starting at 14th level, you and your wraith can separate during combat to become the ultimate death dealing pair.

As an action, you declare a shadow strikes and make a melee attack at a creature within range. Whether a success or fail, after this attack you can teleport to another creature within 15ft to make another melee attack on that target. You may shadow strike at as many creatures as your current spell attack bonus but you cannot attack the same creature twice in one flourish of strikes. 

You can’t use this feature again until you finish a long rest.