The Gwent Card: Wyvern features a highly detailed illustration of a wyvern, a dragon-like creature, in a dark fantasy realism style. The card itself is rectangular with slightly rounded corners, made of a thick, high-quality parchment material with a worn, aged texture to suggest frequent use. The wyvern is depicted mid-flight, with its wings spread wide, showcasing intricate scale patterns and a color palette of deep greens and browns, accented with subtle metallic gold highlights on its claws and wing edges. The background is a muted, misty landscape, adding depth and context to the creature's environment. The card's border is ornate, with embossed designs that mimic ancient scrollwork, enhancing its mystical and valuable appearance.