Your Charisma score increases by 2, and your Intelligence or Wisdom score increases by 1.

You are an Aberration. You are also considered a Humanoid for any prerequisite or effect that requires you to be a Humanoid.

Bound Horrors are ageless beings, and mature in a matter of hours.

Despite Bound Horrors mostly being seen by mortals as evil beings, their apathy toward mortals generally bends them toward neutrality. Their manners are as capricious as their forms, however and so they also lean toward chaos.

The Bound Horror's form is mostly humanoid in dimension, regardless of their natural size. Your size is Medium.

Your base walking speed is 30 feet.

As a being that thrives in the shadows, darkness cannot hide prey from your sight. You have 60 feet of Darkvision.

As an action, you may reveal some of your true, monstrous form to a target within 60ft that can see you. They must succeed on a Wisdom save against your Charisma score + the target's Intelligence modifier or be frightened. On a failed save they take 2d4 + your Charisma modifier in Psychic damage, and half as much damage on a success. Creatures with an Intelligence score of 5 or lower automatically succeed on the save. You may do this a number of times per long rest equal to your proficiency bonus. The damage increases as you level up, to 2d6 at 5th level, 2d8 at 9th level, 2d10 at 13th level, and 2d12 at 17th level.

Starting at 5th level, more of your monstrous form leaks forth, allowing you to contort your bound body in unnatural ways. You may add your Charisma modifier to Dexterity and Constitution checks and saves. You also gain advantage on saves against being restrained or paralyzed and falling prone does not inhibit your movement.

You know the Eldritch Blast cantrip. You choose Intelligence or Charisma is your spellcasting ability for this spell when you select this race. You have advantage on saving throws against being charmed and immunity to being frightened. You gain proficiency in Intimidation and one other Intelligence or Wisdom skill of your choice. You may gain one additional Intelligence or Wisdom skill of your choice at 5th level, then again at 9th, 13th, and 17th levels.

You can speak, read, and write Common, Deep Speech and another exotic language of your choice.