Cinematic, fantasy, up-close, 4k image of a beautiful, slender Elf priestess raising one hand to cast a spell, seen from behind, standing in front of a battlefield. She has flowing blonde hair and wears an intricate white dress with detailed gold elements. She is summoning an orb of intense, pure light that radiates brilliantly across the field and sky, causing dramatic prismatic flash effects and covering the image in light to the point where only the light and shadows it creates can be seen.