At ten o'clock in the evening, William quietly climbed out of the door of the lounge, the corridor was quiet, and a few rays of moonlight lit the corridor through the window.

William took out his wand and tapped it lightly on himself, whispering in his mouth,

"Disler Falcon", an invisible magic power passed down from the place where the wand struck, like a stream of cold water, enveloping William's whole body.

Then, like a chameleon, the boy's body continued to appear with lines similar to those of his surroundings, and it took about five seconds for William to completely disappear into thin air.

It was still too slow, and the boy thought helplessly, knowing that five seconds was enough time to fire several deadly spells.

Thanks to the "sought-after item" "The Invisible Book of Invisibility" bought from the owner of the Blotted Bookstore, William violently destroyed the magical structure engraved on the book, and the book finally revealed its true face to William.

Due to William's damage, the text in several places on the book was somewhat blurred, and William had to compare several books before finally transcribing the content completely.

Slightly different from what William had in mind, the book wasn't about a new invisibility spell, the spell was still the same spell from the Illusion Charm.

But the book is about the techniques of the invisibility charm, and William discovers that many of them require mastery of magic.

And it just so happens that William's own control, with the help of a wand, can be regarded as a leader in controlling magic power.

So William began to practice the spell after figuring out the secret of the book.

You must know that although William learned to cast the illusion spell a long time ago, at that time, it took him almost twenty seconds to mobilize his magic to cover his body.

And now, although it's still a long time, it's a lot of progress, isn't it? This kind of thing is unhurried, William comforted himself in his heart.

The boy quickly left the Ravenclaw Tower and made his way to the prize showroom on the fourth floor of the castle.

It is worth mentioning that it is not for nothing that the Illusion Spell is called a Night Wandering Artifact. William, on his way to find the prize showroom, unfortunately bumps into Filch on the night watch.

William held his breath tightly and hid his body behind the castle armor against the wall, silently waiting for Filch to pass by.

"Meow~" A cat meow sounded at William's feet, which really startled the boy.

William looked down to find a scrawny, gray-haired creature looking at William with her wizened light bulb-like eyes.

"What's wrong, Lady Loris?" Filch walked over and gently picked up the kitten, which seemed to be empty for a squib.

"Let's go, Lady Loris, there's nothing there." Filch slowly walked away with his beloved cat in his arms, and William finally breathed a sigh of relief.

Do you know how scary it is to suddenly hear a cat meow around you in an empty castle?

Rao is William's courage is quite bold, and he almost screamed in fright.

Merlin is on top, this is too scary, okay? William muttered inwardly as he continued to walk towards the prize showroom.

The Illusion Spell is good for everything, but it can't be used with a fluorescent spell in the dark, which makes William, who is not so familiar with the castle, have to stop at every intersection and think about the next direction.

If only he could have dark vision like the dark elves in the previous games, the boy put down his wand that had just finished using the guiding charm, and thought to himself, maybe I could try to invent a spell like this.

William made his way through a corridor and quickly came to the door of the prize room, which, as Draco had said, was unlocked, and William checked and found no vigilance magic.

The boy strode into the room, which was large, densely packed with countless gold medals and trophies, and placed there in different yards.

William arrived early, but neither Malfoy nor Potter arrived, so the boy wandered around the showroom by himself.

The boy walks through the rows of medals and soon finds the former mystery man, who is Tom. Riddle, the Special Contribution Medal he received at Hogwarts.

This medal is supposed to be the one he got by framing Hagrid for opening the secret room. The secret room will be opened again next year.,It seems that I'm busy next year.。 William looked at the medal in the window and thought to himself.

Immediately afterward, William found Harry's father, Jaime. Potter won the Hogwarts Quidditch trophy, as well as the twins' older brother Charlie. Weasley swept the Quidditch trophy that Slytherin had won in those years.

"I'll just say, Harry, Malfoy won't be coming back, he must be afraid of being beaten." A voice rang out from the doorway, "And that William, who will actually help Malfoy, is also a bad guy, and may become a bad guy like the mysterious man in the future." ”

"No, William is not like that," a female voice followed and argued with the male voice that had sounded earlier.

It seemed that Harry and they arrived first, and William turned out the window and returned to the door of the showroom, just in time to see Harry, Ron, Hermione, and the little chubby Dun Neville who looked a little cowardly behind him.

Apparently the sound of the argument that had just started was Ron and Hermione's.

"If they're not scared, then why don't they come out? Malfoy, and that what Friedrich. ”

"It's not a good habit to speak ill of people behind your back, Weasley. I thought Professor McGonagall had already made you understand that. ”

William waved his wand, lifted the illusion spell, looked at the stunned crowd, and said with some anger.