Oath of the Death Warden

 Death walker

Channel Divinity

When you take this oath at 3rd level, you gain the following Channel Divinity options.

Reaper Aegis. For 1 minute as a bonus action, you call fourth spirits to swarm around you. When you do this you gain a +2 to your AC, any creature that hits you with a melee attack takes necrotic damage equal to your paladin level, and you deal an additional 1d8 necrotic damage to your melee attacks.

Death Ward. For 1 minute as a bonus action, you can bolster your allies. Each creature of your choice that can hear you within 30 feet of you gains advantage on death saving throws, and gains resistance to necrotic and radiant damage.

Death Walker Magen

Starting at 3rd level you become an emissary of death granting certain benefits along with bonus magic. 

Resistances - You are resistant to necrotic damage. 

Solemn Judgement - Starting at 3rd Level, when you hit a creature with a melee attack, you can expend one spell slot to deal necrotic damage to the target, in addition to the attacks damage. The extra damage is 2d8 for a 1st-level spell slot, plus 1d8 for each Spell Level higher than 1st, to a maximum of 6d8. 

Death Warden Spells - These spells can be used once per long rest and can be changed after you take a long rest. 

- 3rd: 1 cantrip and 1 level 1 spell from the cleric spell list

- 5th: 1 level 2 spell from the cleric spell list

- 9th: 1 cantrip and 1 level 3 spell from the cleric spell list

- 13th: 1 level 4 spell from the cleric spell list

- 17th: 1 cantrip and 1 level 5 spell from the cleric spell list

Death Warden Heirloom

Starting at 7th level, you gain an heirloom blessing from death. Giving you the power to bond with with a weapon of your choice. You can only bond with one weapon at a time.
Bonding with a weapon allows you to your charisma modifier to attack and damage rolls made with this weapon, and makes the weapon magic if it wasn't considered magic already. As a free action you can summon this weapon to your free hand, or dismiss it to a pocket plane that only comprises the weapon. Being separated from the weapon for longer than 10 minutes causes it to be pulled into the pocket plain, or you can use your bonus action to recall it to you.

Deathless Spirit

Starting at 15th level, you have advantage on death saving throws. In addition, you gain two spectral wings giving you a flying speed equal to your walking speed. 

Reaper

At 20th level, your presence on the field of battle causes panic and terror on the battlefiled to those who would raise their swords against you. You can use your action to gain the following benefits for 1 hour:

Each creature within 60 feet of you must make a Charisma saving throw or be frightened for the duration of your transformation. You have resistance to radiant, bludgeoning, piercing, and slashing damage. You gain immunity to necrotic damage. Whenever a creature dies while within 60 feet of you can choose to have them rise up as a undead creature under your control for the duration of your reaper transformation. You can only have a number of creatures under your control equal to your proficiency modifier, if you reach your limit and choose to raise another creature then the first creature you raised falls dead and so on. 

This effect ends early if you are incapacitated or die. Once you use this feature, you can’t use it again until you finish a long rest.