"Kingsley smiled his Cheshire smile. And without a word, he called up the white darkness - the subvertio - a spell that unlocked what could not be unlocked, that destroyed what could not be destroyed. There was a rumbling, a shaking, like the strongest earthquake, and the iron gate crumbled, and the path began to melt. the demon shrieked, but Kingsley just looked at Mimi the entire time. "Azrael..."