So way back in D&D2e days, I came up with my own campaign world. New deities, new races.
The war god was also the god of the night sky, and his chosen people were nocturnal hunters whose eyes glowed like stars. So, it had both combat and astrology in his portfolio, but I kind of left it at that.
Then recently (again) I heard Dan Bull's Far Cry Primal Rap.
Suddenly I saw this war god as also the god of time. The cycle of change, destruction, the volcano that buries the city and replenishes the farmland. It's dancing the world away. Now I'm reenergized. A god that is both prophet and destroyer. His home palace is a place of endless battle, dates and places plucked from history, where travel between battles becomes possible, because it's all part of the same great eternal battle.
I'm going to start writing up this world once the ORC gets finalized. Get everything functioning in PF2e. I'm feeling my muse return after years. It's beautiful.