Vampiric

Through some means you have become a vampire and are now subject to the following effects.

Creature of the night. You have advantage on perception checks at night.

Daylight sensitivity. You are no friend to sunlight. While exposed to daylight you have disadvantage on attacks and perception checks. Prolonged exposure to daylight will result in you taking 1d4 radiant damage per hour.

Undead body. You are now considered an undead creature. You are now immune to necrotic damage but vulnerable to radiant damage. In addition to this all healing from spells, and potions is reduced by half.

Feed. Your body no longer requires traditional food and drink. Instead you must feed on blood from other creatures healing and sustaining you. Failure to do this on a regular basis will result in the following:
Days without blood

1. +1 point of exhaustion.
2. +1 point of exhaustion, you must make a wisdom save DC 10 or attempt to feed on the closest creature to you. 
3. +1 point of exhaustion, you must make a wisdom save DC 12 or attempt to feed on the closest creature to you.
4. +1 point of exhaustion, you must make a wisdom save DC 16 or attempt to feed on the closest creature to you.
5. +1 point of exhaustion, you must make a wisdom save DC 22 or attempt to feed on the closest creature to you.
6. +1 point of exhaustion, you must make a wisdom save DC 30 or attempt to feed on the closest creature to you.
7. You die of starvation.