You and your life force is bound to a single plant, typically a tree, and cannot go far without dying.

You may go 1000ft without harm away from your plant, growing more and more tense the further you go. You gain a level of exhaustion every 10ft after, until 1060ft when you die.

You are able to shrink and turn your tree/main plant into a small stone figurine. Doing so is difficult, and tiring. It takes 12 hours to do this, and you have up to 3 levels of Exhaustion by the end. It takes a further 12 hours to undo this, and, if you do not already have them, you gain up to 3 levels in Exhaustion. With your main plant as a stone figurine, you may travel. If you loose the figurine or it breaks, you will die within 1 week, unless bonded to a new tree, something that is almost impossible to do outside of high level magic such as a Wish Spell. You can live in this state for up to 20 years. On the twentieth anniversary of the day you do this spell, you will gain one level of exhaustion each day no matter what until you turn it back into a plant. Upon the 6th day of exhaustion, you die. Once your Plant is returned to normal, you may not cast this again for equal the amount of time it was in the shrunken stone state.

You gain the ability to disguise yourself as one of the main races that live near you (human, elf, orc, dwarf) completely, with the exception of most of your back, which keeps a wood like texture. This race is chosen during the casting, and is stuck as the race until the curse is undone and re-done.

Because of this, it is rare for any dryad to do it, and due to the multiple tragic ways it can bring about ones end, it is known as a curse. It is only ever done by those who need to move to a new location due to one reason or another, or those who feel they owe a life debt, and must travel to repay it. This ability is a greatly kept secrit of Dryads, and few if any who are not dryads ever learn of it, for dryads know they are seen as monsters.

You have a +4 to perception, and a +5 to Stealth

You have a +4 to Int. A +5 to Wis. And a +8 to Cha.

Dryads may live for hundreds of years, and rarely keep proper track, unless under the Curse of Wondering.

Typically  considered fully adult at 100 years, they can live for thousands of years. 

Dryads value self preservation above all else, and tend toward Neutral, with a majority being True Neutral.

Dryads can be anywhere from 4ft to 7ft tall. Your size is Medium.

Your eyes are accustomed to the low light within deep forests, and so low lighting barly effects you, and you can see in the complete darkness for 60ft.

You know how to speak Common, Elvish, and Sylvan. Elvish is fluid, with subtle iotations and intricate grammar. Sylvan is often seen as the language of nature, as its speakers are often nature spirits and creatures. It sounds like the forest, like birdsong and rushing water, of trees and stone. It flows easily like elven; in fact many linguists believe that the elven language is derived from sylvan. It uses the elven script, though it is hardly ever written.

Dryads are a Medium Fae, and thus magic is a part of your being. You may cast a number of spells without a material cost and without subtracting them from your spell slots for a day. You gain more as you level. Uses your Charisma.

At will: Druidcraft

3/Long Rest: Entangle, Goodberry

1/Long Rest: Barkskin, pass without a Trace, Shillelagh

Dryads, being innate magical beings, have advantage against spells and other magical effects.

As a Dryad, you are connected deeply to forests and woods, and as such Fire hurts you more than other types of damage. It is wise to stay weary and cautious around it.

Dryads are at home in the forests, and everything within them. As such you have the ability to speak with Beasts and Plants as if you share a common Language.

Once a long rest, you may use 10 Feet of movement to step magicly into one living tree within reach and emerge from a second living tree within 60ft of the first tree, appearing within a free 5ft of the second tree. Both trees must be Large or bigger.

You can target one humanoid or beast that you can see within 30 feet of you. If the target can see you, it must succeed on a DC 14 Wisdom saving throw or be magically charmed. The charmed creature regards you as a trusted friend to be heeded and protected. Although the target isn't under your control, it takes the dryad's requests or actions in the most favorable way it can.

Each time you or your allies do anything harmful to the target, it can repeat the saving throw, ending the effect on itself on a success. Otherwise, the effect lasts 24 hours or until you die, is on a different plane of existence from the target, or ends the effect as a bonus action. If a target's saving throw is successful, the target is immune to your Fey Charm for the next 24 hours.

You can have no more than one humanoid and up to three beasts charmed at a time.

As beings of nature, being surrounded in it can be quite beneficial. You have Advantages to Attacks within Forests.

Dryads are Plant like Beings, and therefore do not need sleep like most. Instead you slip into a trance where you can subtly perceive your surroundings for 4 hours a night.

Because of your unique sleeping, magic can not force you asleep.

You can attempt to hide even when you are only lightly obscured by foliage, heavy rain, falling snow, mist, and other natural phenomena.