The Spirits of the Witchwood

Ghosts Exist In The Witchwood

Having been created by Elvish magic, the Witchwood is capable of some pretty magnificent things. Many creatures, beings and humans have perished in the woods. Some are devoured by beasts, others are killed by abominations, and some fall to a more natural disaster. Either way, there have been far too many lives lost within the beautiful forestry.
These souls are bound to the Witchwood. Those who die here remain here. It is unkown if this is due to a spell or just the pure magical force that created the woods. They don't always haunt where they've died. They generally wander the most magically charged locations in search of new bodies to possess. They seek out people who are deep in meditation or seeking pacts with others beyond this realm of comprehension.
If a spectre is strong enough, they can possess those with the ability to astral project. Meditation clears a chamber within one's body which allows the ghosts to fill up said metaphorical chamber and completely take over the subject's body. The same goes for astral projection. Its harder to obtain a body through ritual; the spirit must be invited to inhabit the caster as a vessel.
It happens much more rarely, but it is still possible for the spectre to trick a would-be druid into taking over their entire bodies, not just having a spot within them. If you look closely at night you might see the spectres walking around. You might even see a hunt or a battle being reinacted. If that is the case, you'll want to look closely at your environment. There might be a treasure to find or a quest to complete. There will be more folklore on this.