Because of your hands not having a solid structure, a d6 roll must be made to pick up an object. The roll must be above a four. Objects that have been picked up in the past do not need to be rolled for.

On the other hand, if you want to destroy an object, a d8 roll must be made to do so. Roll must be above a five. A failed roll reinforces the object.

Because of your body is made of partially pollution, entering or coming in contact with any liquid substance halves movement speed and breathability for other creatures, as well as being poisonous to consume or be in for more than thirty minutes for terrestrial creatures and an hour for sea creatures.

Crystals such as (but not limited to) calcite, ametrine, agate, sodalite, and onyx cannot be destroyed or malformed, are often used as containment for Acidborns. 

Strong emotions most often cause misshaping and melting of the body and so does heat damage in substantial amounts i.e. more than a fourth of total health.

Your body is made of a potent mix of acid, pollution, and poison. Because of this, attacking rolls must also make a constitution saving throw as to not take acid damage. Weapons will be dulled, destroyed if the roll is a zero, and unarmed strikes will take acid damage.

Contact with another character or item can be chosen to or not to inflict acid damage by the will of the player without need of a roll.