Sierra glanced up at the Ancient Runes professor. Could he really even be called a substitute professor anymore? He'd been here for years already, hadn't he? Well, with the exception of just a few years, that is. He'd been the main one to teach Sierra Ancient Runes since she'd entered Hogwarts six years ago.

...and of course he was back with his hard-to-understand accent. So what were runes? She raised her hand. "They're the letters that make up the runic alphabet," she said. "They're a type of wandless magic used to help make our lives better."