I have found the Book of Remembrances in the royal library… a wellspring of knowledge directly from the mouths of great rulers and scholars of the past… my only wish is that I might discover a way to add my own knowledge to this work.
T’Arkia, Imperial High Mage
The PCs encounter a strange set of artistic drawings done on the ground as they pass through a city. It has been done in chalks and no one saw who did it. Wizards might recognize the writing within the colored square as an obscure and dead language with a message stating that a prominent wizard and a retired bard have discovered how to populate Arcadia with the spirits of the dead!
Is it a local hoax, or are the PCs crossing the path of a very deranged and possibly dangerous mage?