Harry moved forward, wand jabbing violently with incredible speed as the older wizard cursed under his breath; a shimmering, blue shield was conjured around him, but Harry’s spells cracked it enough to bring it down. The Potions master’s self-control snapped when, while dodging a stray spell, his chest was caught by a cutting curse, opening up a gash from shoulder to pectoral. He moved his wand, battling Harry’s own attacks as he advanced forward, keeping a calm expression on his face but his eyes shined with barely contained contempt.