The Severance is the oldest and most disputed creation myth in the galaxy, telling how the universe began with the death of the god Serathane. Before her fall, the gods existed as thought without form in a void. When Serathane died—either by sacrifice or by murder—her body, mind, and soul became the physical laws, matter, and light that shaped reality, awakening the other gods to sensation and fear.
Two main beliefs divide followers: the Doctrine of Flame sees her as a willing martyr who gave her essence to birth life, while the Doctrine of Blade claims she was slain by other gods to stop her reshaping them. Relics, factions, and prophecies all reflect these conflicting views. Whether she acted willingly or not remains unknown, and some believe Serathane will return to unmake creation.
I was trying to decide between this idea or have all of the gods using their collective power to create the universe. I think I settled with this one though. Let me know your thoughts or suggestions.