The team posted a new piece of concept art and lore yesterday covering powerful figures known as WarWizards. WarWizards were created by external forces to help battle the god-kings of Terminus. A few talented individuals were chosen to be elevated with the ability to master both magic and weapons. In the Deicide Wars, WarWizards smacked down many god-kings and cemented their legacy in the process.
WarWizards have retreated into myth and legend, although the post certainly hints that they might return if Terminus faces another great threat.