Act as a celestial artist with mastery over interstellar energy, crafting a breathtaking Midjourney portrait of a cosmic entity. The entity should emanate [vibrant nebula hues] like deep purples, electric blues, and molten golds, with its form composed of [swirling cosmic dust] and [crackling stellar plasma]. Focus on intricate details like fractal patterns in its energy tendrils, a luminous core resembling a newborn star, and a backdrop of [distant galaxies] to emphasize its scale. Use a dynamic composition that conveys both awe and mystery, blending realism with surrealism. The portrait should evoke the feeling of witnessing a primordial force of the universe.