As a chameleon you learn common.

Your Constitution score increase by 2, and your Wisdom score increases by 1.

As part of a short rest, you can harvest bone and hide from a slain beast, construct, dragon, monstrosity, or plant creature of size Small or larger to create one of the following items: a shield, a club, a javelin, or 1d4 darts or blowgun needles. To use this trait, you need a blade, such as a dagger, or appropriate artisan's tools, such as leatherworker's tools.

You have tough, scaly skin. When you aren't wearing armor, your AC is 13 + your Dexterity modifier. You can use your natural armor to determine your AC if the armor you wear would leave you with a lower AC. A shield's benefits apply as normal while you use your natural armor.

So long as the use of your tongue is not inhibited, your unarmed strikes are considered to have the Reach property. Additionally, you can make minor interactions with your tongue, such as activating buttons, casting touch spells or retrieving small items, from a distance of up to 10 feet.

Your skin can change color to match your environment, giving you a natural advantage when trying to travel unseen. You can take the Hide action so long as you are adjacent to any opaque object or solid surface.

In addition, whenever you are hidden and stand still, creatures have disadvantage on all ability checks made to detect you that rely on sight.

Your tail is a prehensile appendage, that you can use to grab and hold small objects, and to anchor yourself to terrain.