Three blasts of brilliance slammed into Susan at once, she had her wand raised as though she could counter them and there was a white flash as the hexes struck the magical wood, but then Susan's legs convulsed and sent her flying into a corridor wall. Her head hit with a strange cracking sound, and then Susan fell down and lay motionless with her head at an odd-seeming angle, her wand still clutched in one outstretched hand.

There was a moment of frozen silence.

Parvati scrambled over to where Susan lay, pressed a thumb over the pulse point on Susan's wrist, and then - then slowly, tremblingly, Parvati rose to her feet, her eyes huge -

"Vitalis revelio," said Lee just as Parvati opened her mouth, and Susan's body was surrounded by a warm red glow. Now the seventh-year boy really was grinning. "Probably just a broken collarbone, I'd say. Nice try, though."

"Merlin, they are tricky," said Jugson.

"You had me going for a second there, dearies."

They wouldn't have been fooled for an instant if the burst was standard in Hogwarts. Though this could be something as simple as it not being well known, given the miniscule fatality rate in Hogwarts.