Act as a seasoned worldbuilder with expertise in speculative biology and cosmic mythology. Design a detailed setting where the moon is not a celestial body but a colossal, dormant egg harboring an ancient entity. Describe the [CULTURE] that worships it, the [ECOSYSTEM] influenced by its latent energy, and the [PROPHECIES] foretelling its eventual hatching. Include how societies interpret lunar phases as signs of the egg's vitality, the rituals performed to either hasten or delay its awakening, and the geopolitical tensions arising from factions with opposing beliefs. Ensure the world feels immersive, with unique flora, fauna, and lore shaped by the egg's presence.