Oath of the Old Ones (Ascendant)

As a paladin, you follow an oath that leads you to become a true warrior of your faith. Sometimes, that leads you to dark corners; shadowed halls where the whispers lay.

Calmness. You have discovered that your existence is worthless. And yet with that realization, you are unburdened.

Compassion. To live is to suffer. Suffer for others so that you may help give them eternal rest.

Contemplation. Although you are but a glimmer to history, you have received revelations beyond your years. Think deeply and consider it all.

Continuance. Do not falter, do not yield, and give no quarter. Go on and go forth unto the never-ending river of time.

Channel Divinity

When you take this Oath at 3rd level, you gain the following two Channel Divinity options as well as the Eldritch Blast  and the Vicious Mockery Cantrip.

Forbidden Rites

As an action, you can imbue a weapon(s) that you are holding with aberrant energy, using your Channel Divinity. For 1 minute your attacks now deal an extra 1d12 force or psychic damage. This increases by 1d12 at levels 7, 15, and 20. Also, whenever you use divine smite you can change the damage type to force or psychic. 

Mark of Corruption

Choose a number of targets within sight equal to your level, as an action you may attempt to temporarily weaken them. The enemy must make a Wisdom saving throw of 8 + Charisma modifier + proficiency bonus to not be affected by this ability. On a failed save, the target will have disadvantage on all rolls for 1 minute. You can cast Bane, Hex, Hideous Laughter at will, without expending a spell slot.

Oath Spells

You gain oath spells at the paladin levels listed.

Oath of the Old Ones' Spells

Fanatic Faith

At 7th level, when you or a friendly creature within 10ft of you would make a saving throw against the effects of a spell and fail, it can choose to automatically succeed on the saving throw up to a number of times equal to your Charisma modifier + your level each instead. This recharges on a short rest for each creature separately.

At 18th level, the range of this aura increases to 30 feet.

Manifestation of Aberrance

Peel the skin, discard the flesh, tear the organs, and crush the bone. Only then, may the spirit rise to the fore. 

At 15th level, gain all the following mutations. Add an additional +1 to all current and maximum ability scores and an eldritch invocation for every level you would and will have had an ASI.

Eldritch Might

Your muscles and bones grow uncontrollably inside your skin engorging your strength. 

Your damage rolls belonging to melee weapons deal additional damage die equal to your proficiency bonus. You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift. You have expertise in Athletics and strength saving throws. You can use your strength score for your strength checks if your roll would be lower.

Unnatural Swiftness

Bent geometries reign unchecked inside your limbs, gifting you with uncanny speed and reflexes. 

You gain expertise in Dexterity saving throws and skills. You have the Evasion feature and take half damage on a failed dexterity save and no damage on a success. Your movement is doubled.

Strange Vigor

They have granted you their powers, now they give you their flesh; you feel more at home with your new kin.

Increase your AC by your proficiency. Gain damage reduction equal to your level + constitution modifier against all damage except psychic and advantage on death saves. Gain resistance to physical damage. Apply your damage reduction before resistances.

Alien Understanding

Your brain forms bizarre growths and you feel knowledge not meant for lesser beings trickle into you. 

You have advantage on all Intelligence checks and saves as well as proficiency on Intelligence saves. Gain expertise on all Intelligence-based skills. You are immune to madness/insanity.

Warped Perspective

Eyes line the insides of your insides looking inside to the outside seeing clearly; you grow a vertical eye, while each of your eyes forms 3 pupils. 

You have advantage on all Wisdom checks and saves. You gain expertise in all Wisdom-based skills. You can now also see through magical darkness and have blindsight up to 300 feet. You are immune to the blinded, charmed, deafened, and frightened conditions.

Eerie Allure

While some gift their physical form to their servants, some Old Ones go beyond and gift part of their presence -a shard of their divinity.

You have advantage on all Charisma checks and saves. Gain expertise in all  Charisma-based skills. When you are attacked by a creature, it must succeed a Charisma save of 10 + your proficiency + Charisma Modifier or have disadvantage on the attack roll. You are immune to psychic damage. Treat all rolls with charisma checks and skills as a 5 + your Proficiency bonus if it would be less than the total.

Ascendance of the Undying

Oh changer, take your place amongst the Starborn. Alas, such a gift does not come without cost. At 20th level, you gain the following effects:

• You are considered an aberration. Those not like you despise you and will target you first in combat due to your threat if they realize what you are.
• You gain an additional 150 feet of magical darkvision and blindsight.
• You become resistant to a number of damage types of your choice equal to half your proficiency bonus you are not already resistant to. This requires a bonus action to change.
• You are permanently under the effect of Alter Self and the immutable form trait.
• If you ever lose an extremity or organ, they are reformed in 1 hour. You will not die from having your head chopped off, but cannot eat, hear, see, and speak until you grow a new one in 24 hours. Youare however capable of performing complex tasks and skills if applicable as well as move and fight. While beheaded, you still have access to your blindsight.
• You heal 10 hp each turn. You lose the need to sleep, eat, drink, and breathe.