Hogwarts:I create a spell and it can defeat Voldemort in 1 shot

information: hello ladies and gentlemen, carpenter, cement worker, engineers and superman, if any of you say that "ough why so many grammar" or "uhh so many grammar i hate it and why it does not follow the harry Potter mOvIe" first for your information english is not my first language, second i don't care, third if any of you have a good idea tell me so that i can continue this story, fourth this story suddenly come to my mind and fifth if there are similar story like this tell me so i can copy~ hehehe

and the last!!! MY GRAMMAR IS REALLY BAD!! THANK YOU