- In Chapter 27 of Order of the Phoenix, Marietta Edgecombe rats out Dumbledore's Army to Umbridge causing a domino effect of repercussions that results in Dumbledore leaving Hogwarts.- Today’s prompt is: What makes a Patronus Charm so difficult, and how does Harry manage to teach a group of underage wizards to cast it successfully?- This episode is hosted by Steph Martin.- Join in the conversation on MuggleNet’s social media channels by using #PromptlyPotter