Vampiric Curse

Drawing on curses long thought to be extinct, Vampires use the magic bestowed to them to keep themselves going in battle, and turn enemies to unwilling allies.

Shapechanger

As an Action, you can polymorph into a Tiny bat for a number of hours equal to half your Proficiency Bonus. Once you use this feature, you can’t use it again until you finish a long rest.

Bat: Movement 5ft, Flying 30ft

Bloodsucker

As a Bonus Action, you can Bite a willing creature or a creature who is Grabbled by you or an Ally, Incapacitated, Restrained, or is unaware of you. Bite deals 1d10 + DEX + Proficiency Bonus Psychic damage. You gain HP equal to the damage dealt. 

Damage increases by 1d10 at levels 14 and 18

Improved Shapechanger

When using Shapechanger, you can now morph into a Medium cloud of gas as well as a Tiny Bat

Cloud of Gas: Flying Speed 20ft
Cannot take Actions, Speak, or Manipulate Objects.
Can pass through spaces that air can.
Advantage on STR, DEX, and CON saves. Resistant to all nonmagical damage.

You can now use this ability twice per long rest.

Charming Gaze

You target one humanoid it can see within 30 feet of it. If the target can see you, the target must succeed on a Wisdom saving throw against this magic or be charmed by the vampire. The charmed target regards the vampire as a trusted friend to be heeded and protected. Although the target isn’t under your control, it takes your request or actions in the most favorable way it can, and it is a willing target for the vampire’s bite attack.

This effect lasts for 10 minutes and as long as you are within 120 feet of the target. The target can repeat the save every minute and whenever it takes damage from someone other than you.

You can use this ability a number of times equal to your CHA modifier per long rest.

Unmatched Speed

While in combat, your movement speed is doubled.

Undying Retreat

When you are reduced to 0 HP, and have a Shapechanger charge remaining, you can chose to fail a Death Save and turn into a cloud of mist. This cloud immediately moves 50ft as far away from the thing that damaged it and towards the closest ally of your choosing. Upon reaching the chosen destination, the cloud reforms into your body on the ground.

While using Shapechanger this way, you cannot take damage.

Improved Charming Gaze

The target is now charmed for 24 hours, is not ended by any distance, and the target can only repeat saving throws when it takes any damage.