Create a large medieval illuminated initial letter "G" on a textured parchment background. The letter is ornate and highly detailed, decorated with intricate mystical symbols inspired by the demon sigils from the Lesser Key of Solomon, Ars Goetia. Use gold, red, and dark mystical tones for highlights and shading. The initial should feature filigree patterns, small occult motifs, and subtle glowing effects, combining the style of medieval manuscript art with occult symbolism. The overall look should feel mystical, ancient, and ceremonial, as if it is from a rare illuminated grimoire Mehr sehen