Dryad

A single ray of moonlight pierces the forest's branch-bound roof, illuminating the dancing silhouette of a feminine figure. Enter the dryad, a mysterious fey both shy and alluring, whose powers of beguilement are as famed as their harmony with nature.
Shy But Curious When a fey spirit is bound to a tree by a powerful fey, it is forever transformed into a dryad. Whispers speak of this as a punishment, if a fey spirit has fallen in forbidden love with a mortal, but every dryad has their own, secret story. The elegant dryads resemble the most dazzling, female elves. Their golden skin is the color of sunlight, with the texture of smooth bark. Their shapely forms are draped in flowing dresses, made of woven leaves or flower petals, as is their cascading hair.
Their warm laughter and captivating song echoes through the woodland realms, rich and enticing, yet rare and elusive. Despite their alluring appearance, they are shy creatures, leading few mortals to ever glimpse one — except for the druids, with whom they share the duty of forest guardianship. Those who do see one do so mostly from afar, stealing a mere glance from the corner of their eye of a lithe beauty flitting between the trees. A lucky, handsome mortal may be fortunate enough to be approached by one, for a dryad is a curious creature, at the peril of the dryad bewitching them with a fey spell.
Woodland Protectors Dryads are typically neither evil, nor good. They do not harm without cause, and generally prefer to lure their foes away with their mystic, fey magic rather than confront them directly, but neither will they help someone in trouble if it's natural phenomenon harming them. They are the protectors of the natural world, and that world has a dark side. The wolf must eat, the storm must blow. The dryad, for all its grace and endless serenity, understands the savage truth of nature.
They are guardians of forests, and often work alongside satyr, druids and other forest folk. Good and neutral fey are often fond of dryads, with the mischievous pixies finding much in common with them. It is said among the fey folk that a ring of red toadstools marks the place where dryads and pixies come to dance and frolic beneath a full moon, and that any mortal who should stumble upon them will be granted a great boon.
A dryad is bound to a tree, but can roam the area surrounding it. Certain dryad are free to roam as far as their heart desires, but know in the depths of those hearts that the tree is their home, intrinsically linked. If a tree suffers, the dryad suffers. If the tree dies, the dryad goes mad. Only a difficult ritual conducted by a powerful fey, or archdruid, can save the wilting dryad and bind it to a new tree, healing it in the process.
Occasionally these dryads leave their forests, if only temporarily, and with heavy hearts. This is mostly to find some external threat to their woodland home, or else repay a debt to someone who once aided them.