I nodded as I focused on the intensive transfiguration and focused my magical ability, arcing my wand outward as the pavement under their feet rippled and changed into murky water. I closed my eyes and pictured the swamp from my fifth year, complete with the muck and the reeds and left planks of driftwood out for them to grasp onto as the transfiguration completed. Panting, I bared my teeth at them and magnified my voice.