You are an Undead. You are immune to effects that turn Undead, as the burning desire to achieve your goals prevents you from running away.

You have escaped death, a fact represented by the following benefits:

• You have Resistance to Poison damage. You also have Advantage on saving throws to avoid or end the Poisoned condition and Disease.
• You have Advantage on Death Saving Throws.
• You don’t need to eat, drink, or breathe.
• You don’t need to sleep, and magic can’t put you to sleep. You can finish a Long Rest in 4 hours if you spend those hours in an inactive, motionless state, during which you retain consciousness.

When you take the Attack action on your turn, you can replace one of your attacks with an exhalation of magical energy in either a 15-foot Cone or a 30-foot Line that is 5 feet wide (choose the shape each time). Each creature in that area must make a Dexterity saving throw (DC 8 plus your Constitution modifier and Proficiency Bonus). On a failed save, a creature takes 1d10 Necrotic damage. On a successful save, a creature takes half as much damage. This damage increases by 1d10 when you reach character levels 5 (2d10), 11 (3d10), and 17 (4d10).

You can use this Breath Weapon a number of times equal to your Proficiency Bonus, and you regain all expended uses when you finish a Long Rest.

Death's cold grip has taken hold, but you press on nonetheless, unfettered by the necrosis eating away at what's left of you. You have Resistance to Necrotic damage.

You have Darkvision with a range of 60 feet.

Your DM assigns a goal to you—typically, one related to your character’s death. The goal must be a specific task you can complete, such as slaying an enemy or liberating an area and its people. Until you fulfill that goal, you gain the following benefits:

• If you are below half your Hit Point maximum but not at 0 Hit Points at the start of your turn, you regain 1 Hit Point.
• When you stabilize while at 0 Hit points, you regain 1 Hit Point.
• If you die, you return to life 24 hours after death. If your body is destroyed, you reform within 1 mile of the place of your death at a spot determined by the DM. If your equipment was also destroyed, you do not regain it.
• You know the distance and direction between you and any creature involved in your goal, such as a person you seek vengeance against or someone you pledged to defend. This awareness fails if the creature is on another plane of existence.

When your goal is complete, you finally find rest. You die and cannot be restored to life.