Your Charisma score is increased by 2 and your Intelligence score is increased by 1

You are considered a monstrosity.

Fictional Illithids are usually between 8 and 12 feet tall.

Fictional Illithids have a base walking speed of 30ft.

Fictional Illithids are not born and do not go through maturity, they are created at an age of around 300. They expire around 500 years after their creation.

Even the fictional need rest. You must spend 4 hours back in your origins. This can be done by seeping your form inside a book and live through its contents in a dream-like state. If the book you choose is the one that you spawned from, you wake up in a state of calm. If the book you choose is one other than your origin, you wake up grumpy and irritated. If you don't manage to find a book to sleep in, you do not gain the benefits of a long rest.

As works of fiction, Fictional Illithids have no expected alignment. Their alignment is tied to the writing they came from.

Your darkvision has a range of 60ft.

You can speak, read, and write Undercommon or Common, and Deep Speech.

You have telepathy out to a range of 60 feet. You can communicate with one creature at a time using this trait, who can respond in the same manner. Alternatively, you can communicate with any number of creatures of your choice out to a range of 15 feet. These creatures can not respond in the same manner. You don’t need to share a language with a creature to communicate with it using this trait. You must be conscious to use this trait.

When unfed and within 5 feet of another dead or alive creature, you can use a special action to devour their creativity (CHA). This action causes the creature to have disadvantage on their charisma checks and saving throws and the targeted creature gains advantage on the checks and saving throws of their chosen ability until their next long rest. This creature must be medium size or smaller. When you devour creativity, you are considered to be fed for 1d10+5 days.