Here you can find all the resources needed to understand and use the rules developed for a more rules-light system to have adventures in the Four Realms, an unknown space, a black invisible realm that is disconnected from the main lands. This allows for a more diverse and less strict environment, as it's also the place people from outside and far away of the Sand Seas can land in.
World Codex
Maps and Exploration
Articles and Rules
Timelines and Chronicles