The Perpetuals

Your patron is a being outside the cycle of life and death. Although neither divine nor undead, they are former mortal entities blessed or cursed to continue to live forever. As the eminence of death motivates all mortal creatures, the burden of immortality dampens their zest of life. Since they live to see their legacy, the Perpetuals are careful and thoughtful with their goals, if they had any to begin with. As deathless beings, they do not age nor do they die. Many of whom gained immense power, knowledge, and wealth through countless eons. Some scholars debate whether these Perpetuals were at some point failed gods, leading to inconclusive answers.
Becoming a warlock to these Perpetuals entails that you chose to become one of their many toys to be played with...or break. Most Perpetuals are known to take warlocks for their own selfish interests and schemes, while some will only do so for their own amusement. As patrons they will share their vast powers and knowledge, but do so in complex puzzles and riddles. Often breaking their warlocks mentally from the sheer incomprehensibility of the challenge. Essentially weeding out the weaker crop. They are, however, possessive of those that remained in their good graces, looking after those warlocks as treasured pets.

Expanded Spell List

The Perpetual 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.

Deathless Expanded Spells

Spell Level	Spells
1st	command, detect evil and good
2nd	enhance ability, lesser restoration
3rd	aura of vitality, revivify
4th	aura of purity, Leomund's secret chest
5th	greater restoration, raise dead

Eternal Marking

Starting at 1st level, you receive a visible mark on your body that signifies you belong to a Perpetual. Once after a Long Rest, you can ask your patron for a small favor. The favor you can ask for are as follows:

• Ask a yes or no question to which your patron answers to the best of their abilities. (The DM only has to answer yes or no, any further elaboration is according to the Dungeon Master's discretion)
• Get a magical item from your patron that immediately vanishes after it has been used. Only one magic item can be given at a time. (The Dungeon Master chooses what magical item to give)
• Gain one Inspiration. (The Dungeon Master decides when the reroll occurs)

Levity

Starting at 6th level, you become a conduit for your patrons immense unnatural energy, gifting you a portion of their magic for your tomfoolery.

You gain a warlock pact spell slot each time you roll a 1 on any d20 roll and keep it. This does not change the number of warlock pact spell slots you can have.

Resemblant

Starting at 10th level, your body adapts to your patron's magic, giving you immunity to poison damage, the poisoned condition and diseases.

Additionally, when you are subjected to an effect that allows you to make a Constitution saving throw to take only half damage, you instead take no damage if you succeed in the saving throw, and only half damage if you fail.

Simpatico

Starting at 14th level, You become one of the Perpetual's favorite toy, elevating you to something of a pet. The Perpetual prolongs your feeble mortal coil just a bit with it's magic.

Whenever, you are reduced to 0 hit points and not killed outright, you can use your reaction to roll one of your hit die and drop to hit points equal to the hit die results instead. However, you can't use this feature if you are reduced to 0 hit points by a Critical hit.