Arresto Momentum. She knew that spell. It would slow objects down right? Not nearly as exciting as blowing them to smithereens but whatevs. She had never personally used the spell, and she was thinking hard about where she knew that spell from. The professor had even told them to think History. Maybe she should pay ore attention to History of Magic? Think Hannah, think.

Oh, oh, oh. "Didn't somebody use that to stop a player from falling off a broomstick during a Quidditch match?" It didn't matter that the exact names weren't coming to her right? Ok well it didn't exactly stop him from falling but it slowed and softened the fall.