Cartoon Druid in a Bioluminescent Underground City

Cartoon-style illustration of a friendly druid in an underground city. A green-robed druid with a wooden staff carved with leaves stands in a mossy stone plaza, surrounded by glowing bioluminescent mushrooms, turquoise vines, and lanterns. The city is carved from rock with arched bridges, markets, and domed ceilings lit by soft glowing crystals and hanging stalactites. A small fox or owl companion rests nearby. Use bold outlines, bright colors, and exaggerated features reminiscent of Western animation. The lighting is warm green-blue, magical and adventurous.