Spirit Guide(necromancer)

A spirit from your past flows through you  giving you your power and becoming a part on you. Only you can see this spirit and its existence around you makes you cold to the touch and similar to the undead. This spirit is the conduit for your magic and your relationship to it matters. the spirit has morals that may not ally with your own. the spirit may seek revenge or guide you to an outcome you never expected. The spirit lets you tap into undead powers. you can raise the dead and communicate with them. other spirits can connect themselves to you. by being apart of you they have a chance to be reanimated if you complete  their dying wish. during this they become undead that fight for you until return to the land of the dead. 

Undead allegiance

You have the innate ability to converse and reanimate the dead as well as prevent the living from joining them. you gain reanimate dead,  spare the dying, and false life at lv 1

spirit type

At 1st level, you choose one type of dragon as your ancestor. The damage type associated with each spirit is used by features you gain later.

spirit guide

spirit	Damage Type
Wraith	Acid
banshee	Lightning
revenant	Fire
Oni	Poison
phantom	Cold

You can speak, read, and write undead. Additionally, whenever you make a Charisma check when interacting with undead, your proficiency bonus is doubled if it applies to the check.

Banshee

At 1st level, you choose one type of spirit as your guide. The damage type associated with each spirit is used by features you gain later.

Oni

At 1st level, you choose one type of dragon as your ancestor. The damage type associated with each dragon is used by features you gain later.

Phantom

At 1st level, you choose one type of dragon as your ancestor. The damage type associated with each dragon is used by features you gain later.

Revenant

At 1st level, you choose one type of dragon as your ancestor. The damage type associated with each dragon is used by features you gain later.

Wraith

At 1st level, you choose one type of spirit as your guide. The damage type associated with each spirit is used by features you gain later.

Phantom skin

As magic flows through your body, it causes physical traits of your spirit guide 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, parts of your skin are covered by a thin glow of ghostly light. you gain proficiency in stealth and deception. 

At third level you become resistant to necrotic damage.

at 18th level you become one with your spirit and become immune to physical damage just like the undead.

Elemental Affinity

Starting at 6th level, when you cast a spell that deals damage of the type associated with your spirit guide, you can add your Charisma modifier to one damage roll of that spell. At the same time, you can spend 1 sorcery point to gain resistance to that damage type for 1 hour.

Spirit copy

At 14th level, you gain the ability to manifest your spirit to copy your attack. This occurs every time your hit check is higher than 17 naturally. The spirit makes his own hit check for the same move and his own damage check during the same turn.

spirit Presence

Beginning at 18th level, you can channel your spirit guide to help you succeed checks this last for one day after it is conjured  for 5 sorcerer points and takes 24 hours to be available again. Your spirit also pushes you out of the way of the first attack in combat made against you.