.................................Ok so Penelope was not the greeting person during duels. He got that noted right away. The Head Boy had just stood upright from his bow when he saw the Ravenclaw Prefect dissappear before his eyes. Disillusionment Charm was what sprung in his mind immediately. And it was good as well, he couldn't see her anymore so he had to use his other instincts.
Which was hearing and it was his luck that the Ravenclaw did not use non-verbal spells so he moved his head to where he heard her voice and quickly casted a
"Protego!" spell because he was NOT going to lose his wand this early in a duel. Colloshoo was one of his go-to spells as well so he tried to jump out of the way but before he could do that, the spell had hit him and he tried to move his feet but they were stuck to the floor.
No matter though, he could still turn his body a bit. And after hearing the third spell, another familiar one because the previous DADA Professor had used this on him last year, he quickly
ducked and the spell flew over his head. His hair was safe~
Now was time for the counter-attack but with her invisible it was difficult to point out where she was , and he couldn't hear her walk around either. Just her voice as she casted spells. Pointing his wand at the ceiling, he quickly casted
"Lumos Maxima!" to get the whole room to light up and looked around to see where she was. And he did spot her moving away from her previous place.
With a grin, because he knew he hadn't lost yet. Cause seriously, she was good, he pointed his wand at the place she was standing and shouted
"Flipendo!" in the hope it would hit her and she would fall but in case that didn't work he send a
Trip Jinx spell her way as well, non-verbally to add a suprise