Studying Cosmology
Mia's Notes
Planar travel:
Magic - there are some highly advanced spells that allow you to travel to other planes, with varrying precision of course
Portals - there are many portals across all of the planes that link to other planes. The ones that exist in Material plane aren’t recorded very well and might be guarded (from one side or both). Most portals exist in distant locations, and a portal’s location often has thematic similarities to the plane it leads to. For example, a portal to Mount Celestia might be located on a mountain peak. Most portals aren’t open all the time, but open only in particular situations or when a certain requirement is met (a key, a command, a spell, a certain condition or situation, specified times, completely random, etc)
The Infinite Staircase? - Maybe just a legend or fiction, but there are writings about The Infitite Staircase and it’s noble genie caretaker Nafas. The staircase is said to have hidden doors in every plane. Legends say that Nafas was created by the planar winds that blow into the expanse through its myriad doors and is a distant and benevolent observer who hears wishes spoken throughout the multiverse—wishes he fulfills with the help of adventurers who happen upon his aeolian palace. Every description of the infinite staircase is different (Mia notes = is that because it’s all made up or becuase its so expansive or ever changing? Does it share space with the etheral plane or exist outside/within all planes?)