Drow Palace - Portal (Patreon)

This map series revolves around Myth Drannor and Menzoberranzan.
My idea is that these 2 places share a mystical bond connecting them together through space and time. It can be the portals or an enchantment that allow you to travel trough different time periods from present ruined state to the times of splendor and from one city to another. Of course the bond must be discovered and studied. A ritual must be performed. This can be a great hook to allow your party to travel back in time to investigate the fall/rise of the cities or other past events and try to fix them.

As several state of the cities are available you can have have one state for a time period. The party could have to travel several period before reaching the one they aim for. Interesting encounters could take place in different times. Lost knowledge and spells could be gathered by exploration or social interaction. (location of an artefact, exact time : year, and even day) to travel to.