u get a +2 on int and a +1 on dex

Thanks to your connection to the abyssal depths, you have darkvision with a range of 60 feet.

You can breathe both in air and water.

You have advantage on saving throws against being frightened or charmed.

You have dexterous tentacles that can be used to manipulate objects and perform tasks. You have proficiency in the Sleight of Hand skill and You have two slightly smaller secondary appendages on your body. The secondary appendages can manipulate an object, open or close a door or container, pick up or set down a Tiny object, or wield a weapon that has the light property.

You gain proficiency in the Arcana skill.

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