Create a simple, striking image featuring a bull in a fantasy RPG style. The bull should be depicted in bold, black and white line art, emphasizing its powerful form and mystical aura. The background must be solid black, enhancing the bull's white outline and details, creating a high-contrast visual that captures the essence of a fantasy RPG game. This artwork should convey strength, mystery, and an adventurous spirit, suitable for a Dungeons and Dragons setting