"I don't -" Neville almost stammered, looking in vain for some kind of injury, until it hit him. Some kind of curse, some spell, like the Cruciatus Curse, except there was no one else around, and he knew exactly how close you had to be to cast that curse effectively. Not that then, but something similar. 'I don't know how," he said, gripping Seamus' hand tightly while struggling to grab his wand with the other. "We have to get you to Madam Pomfrey..."