You can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

You gain Proficiency in the Acrobatics Check and Expertise in the Sleight of Hand Check.

You become +2 in Dexterity and +1 in Charisma

You can use an Reaction to dodge an attack that normally would hit you by detaching your tail.
You can also use this to escape an grapple without having to make an check.
You can use this trait equal to your proficiency Bonus.

You have Darkvision up to 90 ft. and Blindsight up to 10 ft.

Your skin is poisonous, you can spend your Bonus Action to touch a creature or put poison on a weapon.
When a creature comes in contact with your poison, they have to make a Constitution Saving Throw, DC equal to 8 + your Proficiency Bonus + your Charisma modifier.
When they fail the save they will take 2d4 Poison damage and their eyes seem to lose you, the poison is messing with their eye sight what makes you invisible for them, for 1 minute, but they can redo the save at the end of their turn.
On a failed save the creature only takes half damage and is still able to see you.

You have also Immunity against Poison Damage and against being poisoned.

You have Advantage on Wisdom (Perception) Checks.
You also gain Proficiency in the Wisdom (Perception) Check.

You know Common and one exotic language of your choice.