Ancient Pure Vampires are stronger and faster than regular vampires. Your strength increases by 2 and Dexterity by 1, or you can increase Dexterity by 2 and Strength by 1

Vampires are considered Undead, and not humanoid. This means that spells that affect humanoids don’t affect them, and that they don’t need to eat, sleep or breathe to continue existing. Necrotic damage and poison damage don’t affect you, however radiant damage is doubled against you.

You have immunity to charms and sleeping spells.

The vampire targets one humanoid it can see within 30 ft. of it. If the target can see the vampire, the target must succeed on a DC 18 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 the vampire's control, it takes the vampire's requests or actions in the most favorable way it can, and it is a willing target for the vampire's bit attack. Each time the vampire or the vampire's companions do anything harmful to the target, it can repeat the saving throw, ending the effect on itself on a success. Otherwise, the effect lasts 24 hours or until the vampire is destroyed, is on a different plane of existence than the target, or takes a bonus action to end the effect. This can be used once per day.

You have the Innate ability to cast Misty Step at will and Fog Cloud 3 times/day.

As an Ancient Vampire,  when in the shadows, your enemies struggle to see you. You have proficiency in stealth.

Thanks to your vampire blood, you have superior vision in dark and dim conditions. You can see in dim light within 120 feet of you, and in darkness as the same. You also have advantage on perception when in darkness or dim light. 

• Bat form: While in bat form you can't speak, your walking speed is 5 feet, and you have a flying speed of 30 feet. Your statistics, other than your size and speed, are unchanged. Anything you are wearing transforms with you, but nothing you are carrying does. You revert to your true form if you die.
• Mist Form: While in mist form, you can't take any actions, speak, or manipulate objects. You are weightless and have a flying speed of 20 feet, can hover, and can enter a hostile creature's space and stop there. In addition, if air can pass through a space, the mist can do so without squeezing, and it can't pass through water. You have advantage on Strength, Dexterity, and Constitution saving throws, gain a number of temporary hit points equal to twice your level, and are immune to all nonmagical damage, except the damage you take from sunlight.

Once you transform in this way, you cannot transform again until after a short or long rest.

As a bonus action on your turn, you may make a bite attack, dealing 1d4 piercing damage on a hit, plus necrotic damage equal to your proficiency bonus. Also on a hit, you restore hit points equal to the necrotic damage dealt.  At 3rd level the piercing damage becomes 2d4.

You create a weapon type that you are proficient with, with your own blood. Take 1d6 bleed damage on initial cast.

As an action, you may magically call 1d4 swarms of bats or rats, provided the sun isn't up. While outdoors, you can call 1d6 wolves instead. The called creatures arrive in 1d4 rounds, acting as your allies and obeying your spoken commands. The beasts remain for 1 hour, and can be dismissed as a bonus action. You may not call on more than one swarm at any time.

You can only cast this twice per day or once if you summon wolves.