For the ancient Celts, the white hart was a harbinger of doom, a living symbol that some taboo has been transgressed or a moral law broken. The white hart’s reputation improved in Arthurian legends, where its appearance was a sign to Arthur and his knights that it was time to embark on a quest - it was considered the one animal that could never be caught so it came to symbolise humanity’s never-ending pursuit of knowledge and the unattainable.
In Greek mythology, the dryads are female spirits of nature (nymphs), who preside over the groves and forests. Each one is born with a certain tree over which she watches. A dryad either lives in a tree, in which case she is called a hamadryad, or close to it. The lives of the dryads are connected with that of the trees; should the tree perish, then she dies with it. If this is caused by a mortal, the gods will punish him for that deed. The dryads themselves will also punish any thoughtless mortal who would somehow injure the trees.
So I decided to make myself a thing :)
Pictures not mine