Your creature type is considered to be both humanoid and undead. You don't have to eat, drink, or breathe. Instead of sleeping, you enter an inactive state for 4 hours each day. You do not dream in this state and retain a limited awareness of your surroundings, giving you disadvantage on Wisdom (Perception) checks

Your constitution increases by 2. As your new body can withstand more than the average solid flesh of a living person.

Wether you’re viewed as scary, disturbing, gross, etc. The living are wary of you and tend to shy away from your rotting flesh and lack of running blood. You gain proficiency in intimidation 

Your body is rotting, meaning it doesnt taste good. (consult with your DM if this affects any encounters)

Your ability scores each increase by 1.

Humans reach adulthood in their late teens and live less than a century.

Humans vary widely in height and build, from barely 5 feet to well over 6 feet tall. Regardless of your position in that range, your size is Medium.

Your base walking speed is 30 feet.

You can speak, read, and write Common and one extra language of your choice. Humans typically learn the languages of other peoples they deal with, including obscure dialects. They are fond of sprinkling their speech with words borrowed from other tongues: Orc curses, Elvish musical expressions, Dwarvish military phrases, and so on.