Icosahedral Planeswalk (The Bakery)
Derived from:
Random Plane (Planescape)
The Prime Material Plane: Strixhaven
Prismari
The case is being handled by a fearsome crew with obvious scars of battle
who are clearly making sure nothing is done in solving it
and are hostile when asked to share details.
A less-reputable local paper writes about
a connection to that deep rumble, that you might hear coming from below the surface of the paved roads from time to time.