See If You Can Guess The Setting

a vast flat disc-shaped fantasy world floating through deep space, oceans and continents spilling over the edges into the stars, the disc supported on the backs of four colossal elephants in ornate cosmic armor, the elephants standing atop a gigantic star turtle named Great A’Tuin gliding through the void, shimmering starlight reflecting on its ancient shell, celestial constellations and galaxies swirling around, epic scale perspective, whimsical high-fantasy tone, dramatic cosmic lighting, intricate environmental details on the disc (mountains, cities, forests), sense of mythic grandeur, surreal yet majestic atmosphere, inspired by classic Terry Pratchett Discworld art, high detail illustration, painterly style, dynamic curvature illusion on the flat world, awe-inspiring cosmic fantasy. Art style of a black light poster.