Uncover the Enchantment: Das Geheimnis der Eiche

The book cover for "Das Geheimnis der Eiche" could feature a large, ancient oak tree at the center, surrounded by Max a cute grey mouse, Lila a cute white mouse, Pico a pigeon, and Momo a mole showcasing their unique traits. The background could depict a magical forest with soft lights and mysterious creatures. The title could be written in an enchanting font at the top, with a hidden treasure hinted at the base of the tree. In a cartoon style