Spirit Bloodline

Some Sorceres have a strong connection with the dead, often referred to as necromancers, witchs or death omens, these sorceres can see and commune with the dead.

Spirit sight

At 1st level, you gain the ability to see the dead. you can see eathereal, invisible undead creatures.

in addition you gain advantage on charisma checks to influence undead creatures

Undead Resilience

As magic flows through your body, it causes physical traits of your undead ancestors to emerge. At 1st level, your hit point maximum increases by 1 and increases by 1 again whenever you gain a level in this class.

Additionally, when damage reduces you to 0 hit points, you can make a Charisma saving throw (DC 5 + the damage taken). On a success, you instead drop to 1 hit point. You can't use this feature if you are reduced to 0 hit points by radiant damage or by a critical hit. After the saving throw succeeds, you can't use this feature again until you finish a long rest.

Gather soul

Starting at 6th level, when you kill a creature or reduce an undead to 0 hit points. you can use your reaction to drain the soul storing it for later use. you can store a maximum of 1 soul per level of sorcerer. you can use the power of the soul in the following way:

Knowledge of the dead: Action: Gain proficiency in a skill or tool for 1 hour. if you are allready proficient you gain expertice instead ( presumably something the creature had in life)

Release the Dead: Action summon a spectre without the sunlight sencitivity trait

power of the soul: bonus action gain 1 sorcery point for each soul drained

strength of the soul: bonus action, heal 1d4 for each soul drained + your charisma modivier

when you use a soul its essence is gone and cannot be used again.

 

Incorporeal Movement.

When you reach level 14, you gain the ability to partially enter the ethereal plane when you move. You can move through other creatures and objects as if they were difficult terrain. you take 5 (1d10) force damage if you end your turn inside an object. You don't trigger non magical  traps or other effects on the matiral plane and don't leave traces of your passing

Spirit Master

Beginning at 18th level, .