Kuo-toa

Superior Darkvision You can see in dim light within 120 feet as if it were bright light, and in darkness as if it was dim light. You can't discern color in darkness, only shades of gray.   Amphibious You can breath air and water   Slippery Skin you have advantage on ability checks and saving throws made to escape a grapple   Otherworldly Perception you can sense the precense of any creature within 30ft of you even if they are invisible or in the ethereal plane adicionally you are proficient in Perception   Mounstrous while not wearing armor you armor class is 12 + DEX mod and your unarmed strike damage is a 1d6   Deification if more than 3 kuo-toas gather together and worship an object or creature as a god that object or creature gais divine power increasing all its stats to a minimum of 10 and +1 per additional kuo-toa
 

Languages. You can read, write and speak Common and Undercommon