Your Charisma score increases by 2, and either your Intelligence or your Wisdom increases by 1 (your choice).

AIS do not age like other species, it is not yet known how long their lifespan is.

Choose any.

In their natural forms, AIS average between 3 to 5 feet in height. Your size is Small.

Your base walking speed is 30 feet. Your base burrowing speed is 10 feet. Your base climbing speed is 20 feet. Your base swimming speed is 40 feet.

In their true form AIS have no eyes with which to see, however they can still perceive their environment out to a range of 60ft. through Blindsight, and a range of 120ft. through Tremorsense. Beyond that however they are blind.

As an action, you can polymorph into a small or medium creature, or revert to your true form. You can’t duplicate the appearance of a creature you’ve never devoured, and you revert to your natural form if you die. While in this form you loose access to all AIS Traits and Abilities aside from Shapechanger.

You decide what you look like, including your height, weight, facial features, the sound of your voice, coloration, hair length, sex, and any other distinguishing characteristics. You can make yourself appear as a member of another race, although it must be a creature of small or medium size. All of your statistics change to match the creatures except for your intelligence and Charisma. Your clothing and other equipment don’t change in appearance, size, or shape to match your new form.

While in this form you may use the natural attacks of the creature whose form you are using (for example if you are a cat you can attack using your claws, or your teeth as dog), however you may not use any magical, supernatural or elemental attacks the creature had. (just because you took the form of a dragonborn does not mean you have the ability to use a breath attack.)

Even to the most astute observers, your ruse is usually indiscernible. If you rouse suspicion, or if a wary creature suspects something is amiss, you have advantage on any Charisma (Deception) check you make to avoid detection.

In addition if you fail your saving throw while in a zone of truth, you immediately revert to your true form.

You gain proficiency with two of the following skills of your choice: Deception, Insight, Perception, and Persuasion.

You gain proficiency with one tool of your choice.

Resistant to piercing, and slashing from nonmagical attacks. Immune to acid damage. Vulnerable to cold damage. Immune to the following conditions blinded, deafened, exhaustion, grappled, paralyzed, petrified, prone, restrained, unconscious. You don’t require sleep, however you must consume something every 24 hours or take a -1 to endurance per day you failed to consume anything. You regain 1 endurance every day that you consume something.

An AIS that takes cold damage has its speed halved, it cant grapple (a grappled creature is immediately released), and looses Shapchanger until it has warmed back up (30 minutes without a heat source).

While grappling a creature, you take only half the damage dealt to you, and the creature you are grappling takes the other half.

You can enter an enemy's space and stop there. You can also move through a space as narrow as 1 inch wide without squeezing. In cold environments your movement speed is reduced by half rounded down, and you have a -10 to your initiative.

An AIS body is made up of Acidic fluids that allow them to devour almost anything they touch. This comes with both benefits and drawbacks.

When you successfully grapple a creature, it takes 1d6 acid damage, and can no longer breath until it breaks free from you. As long as it remains grappled by you, the creature takes 1d6 acid damage at the start of it's turn. Additionally your movement speed is 0 until you release the grapple or until the creature frees itself. As an action you can eat through the non-magical armor or weapon of the creature you have grappled, and requires 2 rounds to complete (using your action to perform this task during both rounds). 

Your unarmed strikes deal an additional 1d6 acid damage.

Any non-magical weapon made of metal that hits you corrodes. After dealing damage, the weapon takes a permanent and cumulative -1 penalty to damage rolls. If its penalty drops to -5, the weapon is destroyed. Non-magical ammunition made of metal that hits you is destroyed after dealing damage. You can eat through 2-inch-thick, non-magical metal in 1 round.

You can eat through most materials with these exceptions: Gold, Glass, Plastic (where applicable), Platinum, Lead, and Mythril.

You cannot use any non-magical weapons or items unless they are made of a material that you cannot eat through, and regardless of magical or material you cannot use armor (you are a ball of fluid).

Coming into contact with Citric Acid (Acidic fruit such as lemons) or sodium bicarbonate (baking soda) removes all natural acid based damage you cause, prevents you from eating through any material, and reduces your walking movement speed to 5 and removes all other movement speeds until you have worked it out of your body. This can be done by an individual who aids you in removing it for 15 minutes or by yourself in 2 hours.

When you aren't wearing armor, your AC is 13 + your Dexterity modifier. A shield's benefits apply as normal while you use your natural armor.

You can understand any language creatures you have consumed knew (including non-sentient languages Ex. Squirrel), however you cannot speak or read in your true form.