Your average posse of adventurous types is hired by a wizard to stop the attacks on a small village.
A blade that lives, and has lived for millennia.
"Thentr was made from moonlight and flame; he has killed one of the mighty rulers of the skies; he has yet to return home".
-Old Cro, the story teller
The story I am about to tell you is one of magic and of monsters, of bravery and courage, of good and of evil, but most importantly of Flame and he who wished to quench it - Old Cro, the story teller.
The numorous denizens of Thanethia all in one place.
In one region of a forest, all of the trees are identical, down to the leaves and the twigs. If the PCs carve something into one of the trees, it could mystically propigate until it covered all of the trees, or could vanish since it was not carved into the one true tree.