Tilting his head in gratitude, the Potion Master rounded the corner and froze. The moment he passed some invisible barrier, he found himself at the edge of a duelling ring, where curses, hexes and jinxes of all colours were flying around. In the middle the trio: Hermione centre, Harry left and Ron at their backs. They seemed to alternate seamlessly between shielding, attacking and regrouped at random intervals. Voldemort and Barty Crouch were circling them, firing without holding back. The air was charged with heavy magic, making it hard to breathe. While the teenagers seemed able to hold their own, sooner or later they would falter, simply because even their combined magical cores, had nothing on the Dark Lord's experience.