As other people answered, Spike looked back up to the board, scanning the spells already there. Ravenclaw had to be catching up now, surely? Beezus, Dustin and Lana had all given more answers in the last round. Getting the House Cup in his last year would be nice...

Pushing his glasses back up his nose, Spike raised his hand again. His next spell wasn't going to end a duel particularly quickly, but it might help slow the opponents casting down. Unless they could down non-verbals, where it might just be a minor nuisance... Anyway.

"Densaugeo, Professor," he said, sticking his front teeth over his bottom lip for fun. "It makes your teeth grow."