When the WandaVision spinoff Agatha debuts on Disney+ later this year, it will boast a star studded cast that includes Kathryn Hahn, Aubrey Plaza, and Patti Lupone portraying witches. If Agathas producers had gotten their way, however, there would have been another witch in the series. In a recent interview with News Corp Australia, Miriam Margolyes revealed that Marvel approached the famed...