Act as a master worldbuilder with expertise in crafting immersive, high-concept settings. Develop a world where the sun is not a star but a colossal, ever-burning forge tended by a divine blacksmith. Describe the [CULTURE] that worships this celestial smith, the [LANDSCAPES] shaped by its fiery hammer blows (e.g., mountains as anvils, rivers of molten ore), and the [ARTIFACTS] forged in its heart that grant power to those brave enough to retrieve them. Include how daily life, mythology, and even the passage of time (perhaps measured in 'strikes' of the hammer) are affected by this cosmic furnace. Use vivid, metallurgic language to bring this world to life.