Driad

Humanoids made of Wood. Guardians of the Forest. Watchers of Nature.

Ability Score Increase. Your Wisdom score increases by 2.

Age. You age just like a tree, very slowly, which means you can live anywhere from a few hundred years to a few thousand.

Alignment. Dryads tend to be lawful and are rarely evil, following and protecting the "law" of the forest.

Size. Dryads come in many sizes, ranging from a little under 6 feet to almost 14 feet tall. Your size is dependant on subrace.

Speed. Your base walking speed is 35 feet.

Barkskin. You have a naturally occurring tough skin covering you from head to toe. When unarmored, your Armor Class is equal to 12 + your Dexterity modifier.

Forest Blend. You have advantage on Stealth checks made to hide amongst foliage, trees and other plant life.

Plant. Your creature type is both fey and humanoid. Given that your physiology is primarily composed of plant matter, you are vulnerable to fire damage.

Photosynthesis. Being a plant-based life form, you create your food through photosynthesis, being in bright sunlight will regenerate hit points equal to your proficiency bonus at the end of each hour you spend this way, likewise, if you aren't in sunlight you for a number of hours equals to your proficiency bonus + your constitution modifier, you will start to decay, taking one level exhaustion at the end of each hour. You cannot recover these levels of exhaustion by long resting.

Languages. You can speak, read, and write Common and Sylvan. Some Dryads that deal with druids folk know Druidic themselves.

Subrace. Pick one from Guardian and Watcher. 

Guardian

Ability Score Increase. Your Constitution score increases by 1.

Size. Your size is Large.

Tree Stride. Over time you have learned the skill of using trees as a type of transportation. Once a turn, you can step magically into one living tree within your reach and emerge from a second living tree within 30 feet of the first tree, appearing in an unoccupied space within 5 feet of the second tree. Both trees must be Large or larger.

Watcher

Ability Score Increase. Your Dexterity score increases by 1.

Size. Your size is Medium.

Tree Stride. Over time you have learned the skill of using trees as a type of transportation. Once a turn, you can step magically into one living tree within your reach and emerge from a second living tree within 30 feet of the first tree, appearing in an unoccupied space within 5 feet of the second tree. Both trees must be Medium or larger.

Nature Whisperer. You are one with the forest and it speaks to you. You can communicate with beasts and plants through Sylvan.