You're Immortal, practically the same age as before you died and turned. 

Thanks to your elf blood plus your hybrid abilities, 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.

You can speak, read, and write Common, Elvish, and one extra language of your choice.

Half-elves 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.

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

You gain the ability to cast spells because of your supernatural nature.

At levels 1, 3, and 7 you can cast spells. 

At 5th level you gain the ability to regain 5 hit points at the start of your turn. If you have at least 1 hp and isn't in running water or sunlight, or take radiant damage from holy water, this trait doesn't function at the start of your next turn

level 10: 10 hit points, level 15: 15 hit points, level 20: 20 hit points

Your fangs grow out + your canine teeth. you do 1d4 piercing damage + strength or your dexterity modifier

You’re attack is counted as an unarmed strike.

At level 1, you turn into a medium sized wolf. Your natural armor is 11 + your Dexterity modifier, your walking speed has increased to 40 ft. and you gain the bite attack. you have proficiency in Melee Weapon Attack, do 1d6 + strength modifier for piercing damage. 

At level 9, you may use a action to Polymorph into a Tiny bat.  While in bat shape, the Vampire can not talk, its walking speed is 5 feet, and it has a flying rate of 30 feet.

At level 20 turn into a werewolf hybrid with vampire wings the width of your arms, you can do damage with your claws. 4d4+Strength or Dexterity modifier and its Slashing. You can do damage with a bite. 4d6+Strength or Dexterity modifier and its piercing.

You can drink the blood of a willing, paralyzed, charmed, incapitated, restrained, or grappled living being. When you drink their blood they take necrotic damage equal to the health points you get back.

the blood gained gives you temp hit points, your speed increases by 10 ft, you gain adv on strength and dex throws, and you gain a temp point to your strength and dex mods for one minute. 

you dont need to sleep, eat, or breathe. your substances is in the form of blood. 8 ounces to get you through the day. 16 to get rid of an exhaustion point.

if you can see, hear, or smell a helpless creature of blood, you have disadv on all wisdom saving throws.

you must succeed a DC 10 wisdom saving throw or turn into a wolf.

fire can hurt you badly.

You are unable to wield or carry silvered weapons. In addition, you cannot have or gain resistance to attacks
made with a silvered weapon. When silver is used to restrain you during a full-moon, it is a DC 25 Strength check to break free.

 If you begin your turn with no more than half of your maximum hit points, you must succeed on a DC 8 Wisdom saving throw or move directly towards the nearest creature to you and use the Attack action against that creature. You can choose whether or not to use your Extra Attack feature for this frenzied attack. If there is more than one possible target, roll to randomly determine the target. You then regain control for the remainder of your turn.

No reflection in surfaces coated or lined in silver, such as old mirrors with silver lining behind the glass.

If your turn ends in the sun you take 1d10 radiant damage.

You take 1d10 acidic damage, when they end their turn in running water.

if you dont have a invite, dont enter. 

hope you're not claustrophobic, you sleep in coffinlike structures