Your Charisma and Dexterity scores both increase by 1

 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.

In your true form, you stand as tall as the average human. In your true form, your size is medium

Your base walking speed is 30ft 

Your lifespan is equivalent to that of a human

You are immune to Charm effects and the Charmed condition

Your creature type is both humanoid and monstrosity

You can use its action to polymorph into a Small or Medium humanoid, or back into your true form. You can replicate the appearance of any humanoid you've seen. your statistics, other than your size, are the same in each form. Any equipment you are wearing or carrying isn't transformed. you revert to your true form if you die.

For the next minute, you magically read the surface thoughts of one creature within 60 feet of you. The effect can penetrate barriers, but 3 feet of wood or dirt, 2 feet of stone, 2 inches of metal, or a thin sheet of lead blocks it. While the target is in range, you can continue reading its thoughts, as long as your concentration isn't broken (as if concentrating on a spell). While reading the target's mind, you have advantage on Wisdom (Insight) and Charisma (Deception, Intimidation, and Persuasion) checks against the target. You can do this a number of times equal to your Wisdom modifier, you regain all expended uses during a long rest.

You gain proficiency in Deception

You've spent much time among a multitude of peoples, you can speak, read, and write Common and 3 other languages of your choice