Base Class: Barbarian
The Path of the Vampire can drink and absorb the blood of an enemy to heal and buff themselves. They can heal damage taken, drink blood from a flask, and drink blood from the source to heal and enhance their own abilities. While this self-healing barbarian may indeed be powerful, the world frowns upon them and their way in battle. As the rest of the world is generally against vampires, they're seen as the spawn and incarnation of the humanoids.
Bloody Retaliation
If an enemy has attacked you while raging, and you attack them on your next turn, you will heal half the damage taken. Permanent decrease in charisma by 1.
Bloody Drink
By containing the fresh blood of the dead and drinking it, you will be able to heal 1d4 + 2.
Deadly Drink
You can sink your fangs into a target and drink their blood. You will heal 1d4 + 2 and damage your target 2d4 piercing. Can be used once per short rest.
Nutritious Blood
When any type of healing is performed because of one of the path of the vampire's class features, strength and constitution saving throws and checks increase by 1, but charisma saving throws and checks decrease by 1. In addition, after healing with the path of the vampire's class features, roll 1d4 for additional healing.