You are both humanoid and undead. You determine your appearance and whether you resemble any of your kin.

You are Small or Medium (your choice).

Your base walking speed is 30 feet.

 Increase one ability score by 2 and increase a different one by 1

You gain darkvision with a range of 60 feet 

You can speak, read, and write Common and one other language

Your undead body grants you resistance to necrotic damage and immunity to diseases.

You can climb difficult surfaces, including upside down on ceilings, without needing to make an ability checkYou have a climbing speed equal to your walking speed. In addition, at 3rd level, you can move up, down, and across vertical surfaces and upside down along ceilings, while leaving your hands free.

Even though you are undead, you still require sustenance in the form of blood to sustain your unholy existence. You do not need to eat or breathe, but you can ingest food and drink if you wish, though this food is always bland and stale to you. If you go for longer than seven days without drinking at least one ration of blood, you suffer one level of exhaustion on the midnight of that day, which can only be removed by drinking a ration of blood. After consuming one ration of blood, you recover all levels of exhaustion. If you reach six levels of exhaustion due to this trait, you are destroyed.

A ration of blood is a vial, roughly 4 ounces and while that is just enough to sustain you each week, you still feel the urge to drink and may still appear twitchy or ravenous in the heat of battle or when treating a wounded ally. A pint, such as that contained within a flask is considered a healthy amount, enough to keep you sustained while also suppressing your less civilized behavior. Each ration of blood heals you for 1d4+1 hit points while a pint will heal you for 2d4+2 hit points.

• Vampiric Bite. Your fanged bite is a natural weapon, which counts as a simple melee weapon with which you are proficient. You add your Constitution modifier, instead of your Strength modifier, to the attack and damage rolls when you attack with this bite. It deals 1d4 piercing damage on a hit. While you are missing half or more of your hit points, you have advantage on attack rolls you make with this bite.
  • When you attack with this bite and hit a creature that isn’t a Construct or an Undead, you can empower yourself in one of the following ways of your choice:
    • You regain hit points equal to the piercing damage dealt by the bite.
    • You gain a bonus to the next ability check or attack roll you make; the bonus equals the piercing damage dealt by the bite.
  • You can empower yourself with this bite a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.

As a vampire you have a set of claws, your claws are natural weapons, which you can use to make unarmed strikes. You may use your Strength or Dexterity modifier for your attack and damage rolls with your claws. If you hit with them, you deal 1d4 slashing damage instead of the bludgeoning damage normal for an unarmed strike.