Homebrew Dark Abberation Species Details

Tall beings like darkness materialized
Ability Score Increase. Your Dexterity score increases by 2, and your Charisma score increases by 1.
Age. Dark aberrations do not age and they look the same from the day they are made to the day they die. Most live up to 500 years.
Alignment. Dark aberrations have known to be all alignments.
Size. All dark aberrations are known to generally be between 4 and 7 feet tall. Your size is Medium.
Speed. Your base walking speed is 30 feet.
Darkvision. 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.
Amorphous. Dark aberrations are extremely flexible and limber. You can move through a space as narrow as 1 foot without squeezing, any items that cannot fit through a space you pass through are left behind. You have advantage on checks made to escape a grappled against creatures the same size as you and typical restraints can't hold you. In addition, you can don or doff armor as an action.
Shadow Step. In the dark, you can move like a blink. On your turn, if you haven't moved and you are in darkness, you can use your bonus action to teleport 20 feet to an unoccupied space you can see. If you do so, you can't benefit from any bonus to your speed until the end of your turn.
Dark Infusion. You draw strength from the dark. When in darkness, you may expend a bonus action to draw in the essence of it. You regain hit points equal to your Charisma modifier. You do not gain points over your maximum with this trait. You must finish a short or long rest before using this trait again.
Languages. You can speak, read and write Common and Abyssa

Dark Abberation Traits

Dark aberrations live in groups called shades, where they roil about one another, making thee illusion of one dark mass. Alone, they are weak, but together, they pose danger to even skilled adventuring groups. People have mistaken them for shadows, but they are quite material in comparison. They rove about the depths of the Underdark, mainly avoiding the illithids and other denizens of the darkness down there. Unlike other creatures of darkness like shadows or shadow fiends, dark aberrations are just barely adverse to light, as they are not shadow. Thus, they do often raid the settlements of other races from late day till dawn.