Eternal Soul

 Sometimes you will encounter someone with a look far too old for their age, if you do you might be in front of an eternal soul, one that has lived hundreds of times, reaching to their new incarnation each time, they tend to have great knowledge, and even greater power. 

Level 3: Knowledge of the past

Your soul reaches towards you to give you the knowledge of past lives. You Gain two new skill or tool proficiencies of your choosing, these can be changed at the end of a short or long rest.

Level 3: Soulfull Spells

When using Augury, Divination or Commune you recieve information from your past lives instead, these spells can be cast without using a spell slot once per day.

You also Add the following to your spells without them counting for your learned spells:

Level 3: Comprehend Languages, Augury, False Life, Detect Thoughts

Level 5: Speak with Dead, Tongues

Level 9: Arcane Eye, Divination

Level 18: Commune, Scrying

Level 6: Undead Affinity

Your soul magic has an affinity with those who have passed away. 

When you cast a divination spell you roll a d6 and add that result for all rolls of a proficiency chosen in Knowledge of the past for an hour.

Level 14: Medium change

As a Bonus Action, you can change what skill or tool proficiencies you had assigned from knowledge of the past or give one of them expertise for an hour, you can use this feature a number of times equal to your proficiency bonus.

Relearned knowledge

 When using Augury Divination or Commune you can let the past life you communicate with take partial possesion of your body, you get one of the following benefits for one hour after casting the spell, falling unconscious, sleeping or being charmed ends the effect.

• Martial life: You gain proficiency in one martial weapon and medium or heavy armor, and you add half your Charisma modifier to all Streanght or Dexterity rolls for the duration.
• Sage life: You gain proficiency in every Wisdom based skill or gain one spell from the Druid, Ranger or Cleric spell list, and you add half your Charisma modifier to all Wisdom rolls for the duration.
• Scholar life: You gain proficiency in every intelligence based skill or gain one spell from the Wizard spell list, and you add half your Charisma modifier to all Intelligence rolls for the duration.

Level 18: Manifest lives

When using Relearned knowledge you can choose to summon a copy of the past life with half of your stats and Hit Points with those abilities instead, If you do so, the ability duration becomes 1 minute or until its hitpoints become zero, using this function again dissmises the previous manifestation.