Geological / environmental event
Hollowveil Volcano, dormant for centuries, erupts violently, spewing ash and lava across the land. This catastrophic event marks the first recorded volcanic eruption in history and coincides with the blossoming of the first prism flower, a rare and mystical plant that thrives in volcanic soil. The Emberkin Goblin tribe, witnessing the eruption and the flower's emergence, begins worshipping a demon they believe to be named Hallowveil, attributing the cataclysmic event to its divine power.