Revised Undying

Trying to make a Medic Warlock that also evokes its name, so I changed the spell options, shuffled and combined the features around to add an aura. Attempting to make the subclass focus on making themselves and the party nigh unkillable.

Death holds no sway over your patron, who has unlocked the secrets of everlasting life, although such a prize – like all power – comes at a price. Once mortal, the Undying has seen mortal lifetimes pass like the seasons, like the flicker of endless days and nights.

Expanded Spell List

The Undying lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

Undying Expanded Spells
Spell Level	Spells
1st	Healing Word, Bless
2nd	Wither and Bloom, Aid
3rd	Life Transference, Feign Death
4th	Aura of Life, Death Ward
5th	Raise Dead, Legend Lore

Defy Death

You can give yourself vitality when you cheat death or when you help someone else cheat it.

Starting at 1st level, you learn the Spare the Dying cantrip, which counts as a warlock cantrip for you. When you stabilize a creature with Spare the Dying or succeed on a death saving throw, you or your ally can regain hit points equal to half your warlock level (rounded-up) in D8 die + your Constitution modifier (minimum of +1 HP). You also have advantage on saving throws against any disease.

You can use this feature a number of times equal to your proficiency bonus, you regain all uses when you finish a long rest.

Among the Dead

Beginning at 6th level, you can hold your breath indefinitely, and you don't require food, water, or sleep, although you still require rest to reduce exhaustion and still benefit from finishing short and long rests.

Additionally, undead have difficulty harming you. If an undead targets you directly with an attack or a harmful spell, that creature must make a Wisdom saving throw against your spell save DC (an undead needn't make the save when it includes you in an area effect, such as the explosion of Fireball). On a failed save, the creature must choose a new target or forfeit targeting someone instead of you, potentially wasting the attack or spell. On a successful save, the creature is immune to this effect for 24 hours. An undead is also immune to this effect for 24 hours if you target it with an attack or a harmful spell.

Undying Nature

Starting at 10th level, whenever you or a friendly creature within 20 feet of you must make a saving throw, the creature gains a bonus to the saving throw equal to your Constitution modifier (with a minimum bonus of +1). You must be conscious to grant this bonus.

In addition, you age at a slower rate. For every 10 years that pass, your body ages only 1 year, and you are immune to being magically aged.

Indestructible Life

When you reach 14th level, you partake of some of the true secrets of the Undying. On your turn, you can regain your full total hit points. Additionally, if you put a severed body part of yours back in place when you use this feature, the part reattaches.

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