Accustomed to twilit forests and the night sky, 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. However, you are blinded by bright light, such as daylight on a partly cloudy day at noon.

You're flesh is malleable, and infused with magic. You can draw upon this magic to seal your wounds closed. 

Your very flesh is held together by necromantic magics. You can channel this magic to cast certain spells from the necromancy school. Intelligence is your modifier for these spells.

At 1st level you learn the Chill Touch cantrip. 

At 3rd level choose between Cause Fear or False Life. You can cast these at 2nd level without expending a spell slot or material components. 1/long rest.

At 6th level you can cast Life Transference without expending a spell slot or material components. 1/long rest.

You can increase one ability score by 2, and another by 1; or three abilities by 1.

Once a human becomes a ghoul, they usually live no longer than 20 more years after the ghoulification. 

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.

Because your body was morphed from magical radiation, Your base walking speed is 25 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.