Your Strength score increases by 2, either your Constitution or your Intelligence score increases by 1, and your Charisma (and Sanity)* scores are both decreased by 2.

*Ignore this if you are not playing with the optional Sanity rules.

You can breath air and water

You can sense the presence of any creature within 30 feet of you that is Invisible or on The Ethereal Plane. You can pinpoint such a creature that is moving.

You have Advantage on Ability Checks and Saving Throws to escape Grapples.

While in sunlight, you have Disadvantage on Attack Rolls, as well as on Wisdom (Perception) checks that rely on sight.

You have Darkvision out to a Range of 120 feet.

You can calculate your AC as 11 + your Dexterity modifier. You can wield a shield and still gain this benefit.

Most Kuo-toa tend to be Neutral Evil.

You can speak, read and write Undercommon.

Your teeth are Natural Weapons that you can use to make Unarmed Strikes that deal 1d4 + your Strength Modifier Piercing Damage on a Hit.

Your size is Medium.

You have invented a God or Goddess. Decide this Diety's Name, Alignment, Province, Holy Symbol, and Portfolio. Because of your link to this Divine Entity, you learn one Cantrip from the Cleric Spell list. Wisdom is your Spellcasting ability modifier for it.