### Human: Can you write an SD prompt about tree of yggdrasil  focus ### Assistant: tree of yggdrasil ( focus ), astrophotography, 4k resolution, octane render, unreal engine, ultradetailed, photorealistic, ultrarealism, trending on artstation, volumetric lighting, style of 3dimensional render, space in background, twinkling stars, ray tracing, high quality, a few planets in background