This is a fantasy illustration depicting a female knight in detailed green armor riding a warhorse, holding a shield with a tree emblem. Her long hair flows in the wind, and her determined expression conveys heroism and solemnity. The background features a forest with sunlight filtering through the leaves, creating a serene and majestic atmosphere. The artwork is rendered in a realistic and detailed digital painting style, showcasing advanced digital art techniques. Created for the "2011 CORE SET" series, it is a classic piece of game card art, embodying the fusion of chivalry and natural power. The tree motif on the shield symbolizes life and protection, aligning with the knight's mission. The composition is dynamic, with harmonious colors and strong visual impact.