Add an option allowing a +2 to one score and +1 to another, or flexible ASIs if using modern rules

Displacerkin mature at the same rate as humans but live a few years longer.

walking speed to 35 feet

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 discern colors in that darkness only as shades of gray.

Displacerkin range from under 5 feet to well over 7 feet tall. You are Medium

Channeling the beast within, you have proficiency in one of the following skills of your choice: Acrobatics, Athletics, Intimidation, or Survival

You have two secondary arms below your primary pair of arms as well as two tentacles and a tail. These can be used to manipulate an object, open or close a door or container, pick up or set down a Tiny object. Your secondary arms can also wield a weapon that has the light property and your tentacles are natural weapons that can be used to make unarmed strikes. On a hit, you deal 1d4 + your Strength modifier piercing damage and have a range of 10 feet.

As a reaction to an attack roll against you, you can cause the attack roll to be made at disadvantage with a well placed illusory copy. You can use this feature a number of times equal to your proficiency bonus and regain all expended uses on a long rest.

Your character can speak, read, and write Common and one other language that you and your DM agree is appropriate for the character.