Death Touched

Infused with the power of a Reaper, melee-optional necrotic nuke

Hands of death

At 1st level, You gain proficiency in martial and simple weapons and medium armor. in addition, you may create a weapon of death that you are proficient with. This weapon counts as magical, and does an additional 1d6 necrotic damage. You may use your CON modifier for this weapon.

This feature’s damage increases at 5th level (to 2d6), 10th level (to 3d6), 15th level (to 4d6), and 20th level (to 5d6).

Death’s endurance.

As magic flows through your body, you begin to gain a resiliency like death itself. At 1st level, your hit point maximum increases by 2 and increases by 2 again whenever you gain a level in this class.

in addition, you gain proficiency in constitution saves.

Reaper’s grasp

Starting at 6th level, when you kill an opponent with necrotic damage, you may regain either health or sorcery points equal to half the necrotic damage you deal. In addition, whenever you cast a spell that deals necrotic damage or take the attack action on your turn, You may spend two sorcery points to maximize your necrotic damage dealt during that turn.

Omen of demise

At 14th level, you gain the ability to direct an omen of demise into an enemy, and terrify them with ease. You have advantage on Intimidation checks, and may choose to inflict the frightened condition on them on a success. Creatures that are immune to being charmed are NOT immune to this effect.

In addition, whenever you frighten a creature,  you may choose to deal 1d6 necrotic damage in addition to frightening the creature.

You may also cast the spell Message in order to make an intimidation check. When cast like this, the spell requires no components, does not use spell slots, and can only be used to make an intimidation check. You may cast this spell a number of times equal to your Constitution modifier 

Grave Walker

Beginning at 18th level, You have a mastery over death like no other. You gain expertise in death saving throws, resist necrotic damage, and are immune to disease and the effects of aging. In addition, your offenses have improved, allowing you to critically hit on a roll of 19 or 20.

Gravewalker state: You may use a bonus action to enter your Gravewalker state, which grants you resistance to all nonmagical damage, maximizes all weapon attack damage and necrotic damage, and allows you to either cast a cantrip or make a weapon attack as a bonus action, or as a reaction to being attacked. If you are knocked to 0 hit points in Gravewalker state, you may instead fall to one hit point and regain hit points equal to half of your maximum hit points and exit Gravewalker state. This state lasts for one minute or until you are killed. You may use this form once per long rest