Create a picture of Felix, the SKINNY, TALL white cat with SMALL blue eyes, standing in front of the oldest oak tree in the forest, being tested by a spirit of LIGHT IN nature. The oak must be immense and majestic, with a wide, twisted trunk covered in moss and lichen, and thick branches that reach out like welcoming arms. Sunlight should gently penetrate through the leaves, creating a mystical and serene environment. The nature spirit should have an ethereal and luminous appearance, with a shape that mixes human and natural elements, such as branches, leaves and flowers. He must be floating near Felix, sizing him up with a knowing, penetrating expression. Felix must be in a confident and courageous posture, demonstrating his kindness and determination. All around, the forest should be dense and vibrant, with lush vegetation and colorful wildflowers. Other magical elements can be added, such as small forest animals observing the scene from afar, glowing mushrooms, and luminous butterflies gently flying. After passing the tests, Felix should be holding a magical oak leaf, which should glow with a soft, golden glow. The scene should convey a sense of achievement, magic, and the depth of connection between Felix and nature.