Mombi, the Wicked Witch of the North's, power began to decline when she was deposed as Ruler of the Gillikins by the Good Witch of the North. This occurred when Orin came upon Mombi transforming someone into a tree; she interfered, and found her magic was stronger than Mombi's and so defeated her and took over her hut, becoming the Good Witch of the North. As the new Ruler of the Gillikins, the Good Witch of the North forbade any other witch to live in the Gillikin Country, thus minimizing potential future threats. Mombi herself was compelled to be nothing more than a lowly female wizard.