Pact of the Vampire

You have willingly taken up service to a Vampire Spellcaster of immense power, with the understanding that you yourself will one day be made a full fledged vampire as a reward for your service. Enticed by immortality and the supernatural abilities afforded the denizens of the night you have entered a pact and sworn to carry out the vampire's plans/wishes wherever you go. Your patron might use spells such as sending to contact you and give you errands/missions to further their dastardly plots. In exchange you receive a taste of their undead essence via a Wish spell, that allows you to walk in the daylight while enjoying some of the benefits of being a vampire spawn. 

Expanded Spell List

The Fiend 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.

Fiend Expanded Spells

Spell Level	Spells
1st	fog cloud, command
2nd	gentle repose, spider climb
3rd	conjure animals, animate dead
4th	polymorph, greater invisibility
5th	dominate person, geas

A Taste of Blood

Starting at 1st level, when you start your turn grappling a creature you can use your action to make a bite attack (using strength as the attack modifier). On a hit you deal 1+strength piercing damage and 1d4 necrotic damage. You also regain hit points equal to the amount of necrotic damage dealt. 

Enhanced Charm

Starting at 6th level, when you cast Charm Person the duration is doubled, and the charmed creature becomes a willing target for your bite attack, no grapple required. Damage from the bite attack does not break the Charm or make the creature hostile towards you or your allies. 

 

Undead Resilience

Starting at 10th level, you gain resistance to necrotic damage. You also no longer need to breath. The Necrotic damage dealt by your bite attack, as well as the hit points you regain from it increases to 1d6.

Almost a Spawn

Starting at 14th level, when you start your turn with fewer than half your hit points you regenerate hit points equal to 5 + your Constitution modifier as long as you have at least 1 hit point remaining and are not in sunlight or running water.