A colossal ancient sky-island city suspended within a swirling aurora borealis, massive floating stone plateaus connected by cascading waterfalls plunging into clouds below, towering crystalline spires with flowing silk banners catching pastel pink and green aurora light, ancient pagoda temples with upturned roofs embedded in floating emerald meadows, tiny robed sky Nomads riding giant luminescent moths between floating lanterns, deep cosmic violet and electric cyan color palette with warm magenta aurora accents, dreamy transcendent mood, dramatic vertical composition with sky city rising through layered aurora curtains toward infinite starry void, epic cinematic Lord of the Rings scale, hyper-detailed matte painting, 8K fantasy art