You require only 4 hours of sleep instead of 8

You can speak, read, and write Common and an understanding of the intent behind all creatures that you either don't understand or if the creature simply cant speak at all

Shapeshifters have functional immortality but they are an endangered species and have few interactions that could lead to the birth of more offspring

Shapeshifters love all creatures but are rarely accepted by humans in turn. They can deceive most humans though, as they are very similar with a select few shapeshifters  have base form that looks just like a generic human.

Your size is Medium by default.

Automatically assume the target's disadvantages for 3 days. Lose 1 hit point for 3 days before gaining 2 at the end of it (for each time its done). If the target has an assumingly higher strength, dexterity or constitution, you gain +1 in all that apply. The ability does not apply to intelligence, wisdom, or charisma. Speed is increased or unlocked after 3 days in the categories that the creature is higher in. After 3 days assume the senses and physical racial traits of the target. 

For elemental energies (must be an item), automatically take weakness to the counter energy forever until counter energy is consumed. Wait 3 days to gain the ability to do +1 elemental energy of the consumed element. take +1 damage from the counter element. Take -1 damage from absorbed elements. This process is done each time an element is consumed, even for the same element. If you choose to use a consumable, then you take the full damage of the consumable if it does so. If it doesn't, then you abandon the ability to use that item for its original purpose.

Grants the ability to communicate and manipulate plants and animals. Manipulate a plants growth and give suggestions to semi-sentient and non-sentient creatures. Roll to request make requests of fully sentient creatures.

You assume the form of any intelligent species that you've seen. You can assume the forms of creatures you have consumed. Racial traits are not granted unless you have use consume.

The manifestation is physical and inherent to your species. No spell is required but shapechanging spiels can certainly apply. You can not modify your speed with this ability.

Your Dexterity score increases by 2.

Your base walking speed is 30 feet.

All shapeshifters have this ability inherent in their genes. You are able to see in the dark up to 60ft.

You have proficiency in the Perception skill.