You can speak to a number of creatures within sight equal to your proficiency bonus. Line of sight is the only distance limitation on this ability, this includes the use of magical sensors. 

When determining your character’s ability scores, increase one score by 2 and increase a different score by 1, or increase three different scores by 1. Follow this rule regardless of the method you use to determine the scores, such as rolling or point buy. The “Quick Build” section for your character’s class offers suggestions on which scores to increase. You can follow those suggestions or ignore them, but you can’t raise any of your scores above 20.

Your character can speak, read, and write Common and Deep Speech. Your Native method of communication is Telepathy.

You are an Aberration.

Your size is Medium or Small.

Your flying speed is 20 feet.

Elder Spawn don't require air, food, drink, or sleep and cannot be forced to sleep magically. Instead they sit idle in a trance remaining semiconscious, for 8 hours a day. During this time you wander the dreams of your companions and the creatures near you. After resting in this way, you gain the same benefit that a human does from 8 hours of sleep.

In your native form, if it can be called that, you are a mass of writhing tentacles in the general shape of a humanoid. Over time you learned how to alter your form to appear as something native and natural to the world you inhabit. As an action, you can change your appearance and your voice. You determine the specifics of the changes, including your coloration, hair length, and sex. You can also adjust your height and weight, but not so much that your size changes. You can make yourself appear as a member of another race, though none of your game statistics change. You can't duplicate the appearance of a creature you've never seen, and you must adopt a form that has the same basic arrangement of limbs as a standard humanoid. Your clothing and equipment aren't changed by this trait.

• You stay in the new form until you use an action to revert to your true form or until you die. Being knocked unconscious does not cause this action to occur. 
• You are a shape changer and are affected by spells that affect those creature types.

Due to your Eldritch origins, you find calm and peace in things that would drive others to madness and horror. 

You have resistance to Psychic Damage.

You are not affected by any effects related to madness. - DM Discretion