Duration: 27.8s

The spell I'm going to teach you is called the Patronus Charm. Did you ever hear of it? No? Well.... A Patronus is a positive force. For the wizard who conjures one... ...it works like a shield, with the dementor feeding on it rather than him. But in order for it to work, you need to think of a memory. Not just any memory, a very happy memory, a very powerful memory. Can you do this? Yes. Very well.