"What does that do" Sim yelled at the other boy, panting heavily. His shoes were full of soggy mud but his adrenaline kept him running.

"Stupefy! Imobulus! Damn..Tarantallegra!" He didn't know why he had used the last spell, perhaps making the creature dance would slow it down or send it to the forest floor? He wasn't thinking clearly, he couldn't even tell if he was aiming in the right direction anymore.