Hermione was standing up, a repulso on her lips when suddenly the section of low wall she was behind exploded out with a deafening grinding and crashing of rock. Everything splintered. Noise. Crushing force hitting her legs. The feeling of being hurled through the rain like a child’s toy. Keep hold of your wand, Hermione, and her fist stayed locked tight around it even as her arms and agonised legs flailed at thin air. Thunk.