Undying Patron

Your pact draws on the power of undeath and forbidden arcana not tied to a particular plane. You might seek a pact with a prominent undead such as Larloch, the Shadow King or Diderius, the Ether Walker; or you could seek out any particularly powerful lich, ancient wizard or mummy lord. Beings of this sort are often highly guarded in divulging their secrets so you might even find yourself pitting them against one another drawing knowledge from multiple entities without full allying yourself to a single source of power. Regardless, the secrets of the ages are yours, secrets of life and death.

Undying Spells

The magic of your patron ensures you always have certain spells ready; when you reach a Warlock level specified in the Undying Spells table, you thereafter always have the listed spells prepared.

Warlock Level	Spells
3	Spare the Dying, Magic Missile, Command, Invisibility, Augury
5	Lightning Bolt, Dispel Magic
7	Aura of Life, Death Ward
9	Hold Monster, Scrying

Forbidden Arcana

Normally the powers of life are the purview of the divine but your patron has begun teaching you there are alternate paths to longevity. You learn the Spare the Dying spell and it counts as a warlock spell for you.

You also begin to tap into the forbidden lore your patron has accumulated over their unnatural long life. When you make an Intelligence Arcana or History check, you gain a bonus to the check equal to your Charisma modifier (minimum one).

Defy Death

You begin to learn the secrets of preserving life through unnatural means allowing you to revitalize your flesh and sometimes even others.

You can restore a number of hit points equal to 1d12 + your Warlock level as a bonus action on your turn. Additionally, when you stabilize a creature with Spare the Dying, you can choose to restore hit points to the creature equal to 1d12 + your Warlock level as part of the same magic action.

You may use this feature a number of times equal to your Charisma modifier (minimum once) and regain all uses on a long rest.

Manipulate Life

Your body and your magic become more inured both against and with the powers of death and decay granting you the following benefits:

• You no longer need to eat, drink, or breathe. For every 10 years that pass, your body ages only 1 year.
• You are immune to magical aging and you gain advantage on Death Saving Throw's. 
• Once per turn, when you or a creature you control deals damage with an attack, you may disrupt the life force of a single creature hit by the attack and it cannot regain hit points until the start of your next turn.

Undying Nature

You have stared into the void of death and no longer fear any of it's secrets. You are immune to the Frightened condition. 

Your ability to channel unnatural resilience increases as well. You recover 1 use of your Defy Death feature when you use Magical Cunning and when you use your Defy Death feature, you can also choose one of the following effects:

Cleansing Resilience. You can immediately end the Poisoned and/or 1 level of Exhaustion on yourself or the creature you stabilize. 

Terrifying Resilience. Creatures within 10 feet of you or the creature you stabilize (your choice) must succeed on a Wisdom saving throw against your spell save DC or have the Frightened condition until the end of your next turn.

Indestructible Life

When you reach 14th level, death holds no sway for you as you partake the true secrets of the Undying. You are immune to having your hit point maximum reduced.

On your turn while you have less than half your hit points, you may cast Regenerate on yourself as an action requiring no spell slot or components. You may also activate this ability when you are at 0 hit points. When you activate this feature while at 0 hit points, you may immediately recover from the Prone condition and move up to your speed without provoking Opportunity Attacks. This spell can’t be dispelled by Dispel Magic.

Once you use this feature, you can’t use it again until you finish a long rest.