Dryad's Gift

A beautiful dryad removes a branch from her tree. As it transforms itself from a branch to the rough shape of a bow, she pulls a few strands of her hair, and they weave into themselves to become a string. She kisses the bow, and its shape shifts again, the center strong and thick, the ends firm but flexible, and the string tight. As she places it in your hands, you can feel that this bow is somehow still alive. This is the Dryad's Gift. You have a +1 bonus to attack and damage rolls made with this magic weapon.
Ordinary branches, when drawn, transform themselves into arrows. They transform back into branches shortly after landing, or when removed from the wound of a living creature.
The string of this bow is unbreakable by nonmagical means, and to the user it smells faintly of sweet flowers. The user gains advantage to any saves based on harmful odors (such as a troglodytes Stench ability), and creatures that try to perceive the wielder of this bow by scent must do so with disadvantage.
This living bow can speak with the forest. By concentrating on a known recipient, and speaking to the bow, the wielder can send a brief message of up to twenty-five words. This message can only travel within the boundaries of a continuous forest, travels as fast as the wind, and can be understood by the intended recipient. The recipient can reply immediately with a message under the same restrictions. Note that this message is not private, and can be overheard by those able to speak with plants anywhere within the forest. To others, it is simply the rustle of branches and leaves in the wind.
(item created by Quintus_J on dndbeyond)

Lore

Long before the age of man, when the forests of old were yet unconceived, the Bos'ilun broke free the cracked earth. Its sprout burst forth amidst the detritus of a deep pit, said to be the skull of an ancient and forgotten god. The tree slowly changed the lands around it; broken crag-like stone became fertile soil under the tree's mighty roots, and, with time, a forest began to bloom.
From the darkest depths of that abstruse pit, long-fingered hands began to claw at the tree's surface, hungry for the emanating power that laid within its bark, tantalizingly out of reach. The Great Bos'ilun was nearly felled until the dryads, who being born of the Bos'ilun felt its immense suffering, drove back the repugnant creatures to the dark and loathsome pit from whence they had come.
Together with the k'kara, they have protected the Bos'ilun throughout the centuries.