The fiendfire catches immediately, and Draco steers the broom straight up as the flames leap from the roof. A noise that’s both an explosion and a howl erupts from the fiendfire as it spreads across the roof and pours down the walls like lava from a volcano. It consumes anything it touches, turning metal and stone to ash as easily as paper. Hovering far above the conflagration, Draco and Hermione watch. "Are you okay?" she asks him quietly.