Tell me about a dreamlike landscape where luminous clouds hover over floating islands.
In this vivid dreamscape, the sky is a canvas of vibrant colors painted by luminous clouds. These clouds shimmer with an ethereal glow, casting kaleidoscopic shadows on the floating islands below. The islands drift lazily across the landscape, each one a lush paradise teeming with exotic flora and fauna. Waterfalls cascade from the edges of these islands, their sparkling water falling into the endless void below, creating mesmerizing rainbows that arch through the air.