After Lupin explained the key points of the spell, Tom and the others began to practice freely.
"Glacius!" Harry waved his wand, but only a stream of white frost came out.
Hermione was much more relaxed, having lied when Professor Lupin had asked her if she had learned the Freezing Charm. It was a spell she had mastered in her second year. She was embarrassed to say she had already learned it; it would have been difficult for the others. Why not listen to Professor Lupin's class on the Freezing Charm again? It was a very different experience learning it on her own versus having a teacher explain it.
Hermione moved her wand slightly, and a frost appeared in front of her desk, covering the surface with a thin layer of ice that seemed to expand.
Harry, upon seeing Hermione's performance, felt frustrated. Was she so talented? She had barely started, and she was already doing so well... He secretly admired Hermione's talent, unaware that she had already learned the spell.
"Glacius!" Tom imitated the others and cast the Freezing Charm. It was his first attempt, and he felt a cold shiver from his arm to the wand, finally shooting out from the wand's tip, leaving an ice trace on the classroom floor the size of a window.
"Not bad." Tom was quite satisfied with the effect of his first spell cast. With more practice, he would surely reach the level of mastery of the other spells.
Next, he decided to try the weather spell. It was a very special spell, and unlike other spells, it was divided into two parts, with the difference in the second part resulting in entirely different effects.
After all, the weather the weather spell invoked was different: it could be rain, snow, a storm, or even hurricanes...
Tom chose from various types of weather and finally settled on the weather spell: rain.
He would like to try summoning some lightning himself, but it seemed absurd to generate lightning out of thin air. He knew very well what his capacity was. To summon lightning, he first had to create some clouds in the area, so the weather spell - clouds and the weather spell - rain were prerequisites. With clouds and rain, then there could be thunder. Tom believed that was the logical process.
Maybe when he became as powerful as Dumbledore, he would be able to do it in one step.
"Atmospheric-nubilum!"
"Atmospheric-pluvia!"
Tom cast two consecutive spells towards the ceiling, capturing the attention of the other three people in the room.
"Yodel, you must follow a gradual process," Lupin frowned. The way Tom was acting was a bit rushed. Did he want to get it all at once?
Before he could finish speaking, he noticed something strange: the weather in the classroom had changed.
The windows slammed open, and large amounts of water vapor condensed in the classroom. Soon, the space above the History of Magic classroom was filled with clouds.
Lupin: ...
Hermione, Harry: ...
"If I'm not mistaken, did you say the word 'rain'?" Hermione weakly asked Tom as she lightly hit him.
"Yes."
Tic!
A raindrop fell to the floor, and then it began to rain in the classroom.
"Tom Yodel," Hermione shouted, quickly drawing her wand and transfiguring the table in front of her into a kind of umbrella. If you were skilled in Transfiguration, it was hard to get wet in the rain. Harry crouched next to Hermione and took shelter under the "umbrella" she had created.
Lupin felt the rain hitting his face, and a strange sense of disbelief washed over him. Had Tom Yodel's weather spell actually worked? It seemed absurd.
"This doesn't make sense! Am I an excellent teacher or what?"
Tom, following Lupin's instructions, cast the weather spell twice. He felt two streams of magic emanating from him and naturally turning into a group of clouds, causing artificial rain.
"Now that the atmosphere has come this far, why not try something a little excessive?" Tom muttered as he pointed his wand at the clouds on the ceiling.
"What are you going to do?" Hermione had a bad feeling.
"Atmospheric-fulmen!"
After Tom cast the spell, he felt a sense of emptiness. He had the impression that the spell had considerable power.
After a few seconds, a silver flash shone between the clouds.
Hermione's face suddenly lit up. She understood Latin, and the meaning of the word Tom had pronounced was "lightning," so...
"Professor, quickly hide!" Hermione exclaimed.
Professor Lupin, as if waking up from a dream, wiped the water from his face and found a table to take cover under.
Now, Tom was the only person exposed without protection, but he didn't mind the rain or his soaked robes.
This was controlling lightning and changing the weather! Tom was extremely excited. He stared at the clouds, hoping lightning would form within them.
At that moment, Hogwarts was already under curfew. The castle was silent, except for one place where there was still noise: the History of Magic classroom. The sounds coming from the classroom attracted a person, or more precisely, a person and a cat.
Filch, the caretaker of Hogwarts Castle, was a very dedicated person. Every time the sun set and curfew began, he diligently patrolled the castle, catching young wizards who ventured out at night.
Years of experience as a caretaker had made Filch sensitive to noise, and naturally, he did not overlook the sounds coming from the History of Magic classroom. Following the sound, he arrived at the classroom door.
He didn't rush in to avoid alerting anyone but pressed his ear to the classroom door and listened carefully to the situation inside. Filch heard a female student speaking and also heard a sound like rain.
"What are these little troublemakers up to?" Filch frowned, and the wrinkles on his face deepened. He didn't quite understand the situation, but it didn't matter; he could be sure that there were students who were awake and causing trouble in the History of Magic classroom in the middle of the night.
So, he pushed open the classroom door abruptly...
A white light shone before his eyes, so dazzling that Filch couldn't see anything.
Boom!
A thunderclap rang in his ears, making them ring.
The clouds above the classroom ceiling first became clearer, then cracks like those of an egg appeared, and from those cracks, white light leaked. Just as Filch opened the door, perhaps due to a change in the air current in the room, a white and purple lightning bolt fell from the clouds.
Boom!
The thunderous sound echoed throughout the castle.