Starting at 5th level you get the ability to cast Tree Stride once per long rest.  
At higher levels the amount of casts increase.  9th level twice, 15th level 3 times before needing to take a long rest.

At 1st level you have the ability to cast the spell Speak with Plants two times before needing a short rest to be able to cast it again.  Once you reach level 17 you can cast this at will

You burn more easily when fire connects to the dry barky exterior of your skin and your body has a harder time fighting unnatural rot

Due to ancient DNA flowing through your body, at level 20 you can assume the form of a tree and be undetectable by magic, gaining a plus 10 to stealth as long as you are still, in this form you do not need to eat, breath, or sleep.  You acquire your nutrients from the sun.

Your Dexterity score increases by 1. Your Wisdom score increases by 2.

Shifters are quick to mature both physically and emotionally, reaching young adulthood at age 18. They rarely live to be more than 250 years old.

Shifters tend toward neutrality, being more focused on survival than concepts of good and evil. A love of personal freedom can drive shifters toward chaotic alignments.

Shifters range from 5 to almost 7 feet tall, depending on their subrace. Your size is Medium.

Your base walking speed is 30 feet.

You have proficiency with the Perception skill.

You can speak, read, and write Common and Sylvan(the language of the feys).