You gain the Chill Touch cantrip and use your Charisma as your spell casting ability.  At third level you can cast Charm Person 1/long rest. At fifth level you can cast Misty Step 1/long rest.

You gain a bite attack that you can use on a willing creature, a restrained or incapacitated creature, or one grappled by you.  Using either dexterity or strength for the attack roll (you count as proficient). You deal 1 point of piercing damage and 1d6 necrotic.  You lower the targets MAX HP by the necrotic damage dealt until they take a long rest. Additionally, you recover HP equal to the necrotic damage you dealt.

Resistance to Necrotic Damage

Your Charisma score increases by 2, and one other ability scores of your choice increase by 1.

Dhampirs mature at the same rate humans do and reach adulthood around the age of 20. They live much longer than humans, however, often exceeding 1000 years. They retain their appearance at their maturity. 

Dhampirs tend toward evil but not rigidly. Chaos and law are a personal preference. 

Dhampirs are about the same size as humans, ranging from 5 to 6 feet tall. Your size is Medium.

Your base walking speed is 30 feet.

Thanks to your vampiric blood, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.