Karl was not in a good mood because he was late for Astronomy Class last night.
So, naturally, Professor Aurora Sinistra deducted five points from him.
At the same time, the class experience was not good enough.
Because attending class in the middle of the night was a bit too eerie for the Young Wizards.
Last night, nearing dawn, the Hufflepuffs and Slytherins couldn't hold on any longer; they were all swaying and dozing off from exhaustion.
Hufflepuff and Slytherin only had this class together, but there was basically no communication between them.
Because whatever they had to say was in their dreams… well, half-asleep.
However, this was not what bothered the Young Wizards the most; what they worried about was what they would do in a few days.
The Astronomy Class classroom is on the top floor of the highest tower in Hogwarts Castle—the Astronomy Tower.
In addition, to learn the names of different stars and the trajectories of planets, the Young Wizards need to observe the night sky with telescopes.
And for better observation, the windows must be open.
Before, Karl complained that the Potion Class classroom was cold and damp, and that he would suffer in winter.
He didn't expect that compared to Astronomy Class, it was merely a minor inconvenience.
Imagine the scene: cold winter, deep night, high tower, open windows, biting wind…
That's enough; the Young Wizards are already shivering.
However, Karl was not among them, because with his mastery of the Ixtal Flame Primordial Axiom, he was definitely the one least afraid of the cold.
Huh? Why did his mood improve again?
Indeed, happiness is always built upon the suffering of others.
...
Karl, who had no classes on Wednesday morning, went to the eighth floor of the Castle, this time not to find Headmaster Dumbledore, but to the Room of Requirement.
He wanted to practice spells while also developing the Flame Primordial Axiom.
Before long, Karl found the tapestry of Barnabas the Barmy being beaten by a Troll in the eighth-floor corridor.
"I need a room where I can practice spells and that is fireproof…"
While muttering to himself, he walked back and forth three times in front of the wall opposite the tapestry, and a smooth door appeared.
Karl pushed the door open and walked in; what met his eyes was a massive stone Great Hall.
The structure of this Great Hall was clearly a replica of the House Great Hall, except that the ceiling, walls, and floor were all made of rock.
In the center were various targets in different poses, not only human-shaped but also one-to-one replicas of various magical creatures, such as Dragons.
"As expected of the Room of Requirement… bah! The Room of Requirement!"
"Let's begin! Diffindo… Reparo… Smokescreen… Wind Whirl…"
After a brief spell practice, Karl began to consider how to develop the Flame Primordial Axiom.
He could now summon and control flames at will, or as Millio put it: Elemental magic is simple; you just think about it, and then *poof*, there's fire!
But as a kind-hearted child, Millio didn't research any offensive moves.
Moreover, having quickly self-mastered the Serene Flame, his use of fire was for healing, not harm.
So Karl could only think outside the box, preparing to learn a few tricks from master fire-users.
It is well known that the upper and lower limits of flame abilities vary greatly.
Having only destructive power is not enough; it must also be able to successfully hit the target.
Counter-example: A certain Great Fireball Jutsu never hit anyone.
Hitting the target is also not enough; it must also be able to cause damage quickly.
Counter-example: A certain Amaterasu flame; if you take off your clothes quickly, you can even be unharmed.
And Karl's ideal attack method should be fast, high-damage, and large-scale flame incineration.
"Boom!"
As Karl waved his wand, a raging Fiendfyre appeared out of thin air around him, spreading outwards.
"Great Fire Annihilation!"
A massive fireball like a meteor crashed to the ground, overturning and igniting many targets.
"Great Fire Destruction!"
Flames surged out like a flood, turning the area in front into a boiling sea of fire.
"Dragon Flame Song!"
Several Dragons of fire spiraled up from the sea of fire, constantly diving, strangling, and explosively incinerating.
"Great Flame Commandment: Flame Emperor… Forget it, forget it, that's a bit ominous!"
With a thought from Karl, the raging flames disappeared, leaving only the blackened, cracked stone floor.
"The power is average, but it's enough to deal with ordinary Wizards, and with my control, it's a bit like a weakened Fiendfyre."
"The attack range is also decent, but the speed is still a bit slow."
It seems he needs to learn the Fiendfyre Curse; this way, he can not only strengthen the power of the flames but also increase their agility.
After all, Fiendfyre is a constantly strengthening demonic fire that can even mimic monster forms, relentlessly chasing almost everything flammable, regardless of friend or foe.
And he can control the flames to distinguish between friend and foe, so he doesn't have to worry about Fiendfyre getting out of control, and he can even imitate Grindelwald's Protego Diabolica...
Wait a minute! Karl felt like he could cosplay a certain old man!
"If I drape flames over my body, isn't this the West: Residual Sun Prison Garb?"
"Fiendfyre transforming and chasing, does this count as the South: Fire Fire Hundred Trillion Deaths Grand Funeral Array?"
"If I can combine spells like Sectumsempra with flames, won't the North: Heaven and Earth Ashes also appear?"
"As for the East: Rising Sun Blade… that won't work; the wand definitely can't withstand the flames."
Karl shook his head, shaking off the jumbled thoughts in his mind.
"I'll just keep playing with fire; anyway, I won't wet the bed."
...
Karl played with fire all morning, only leaving the Room of Requirement at noon.
He currently had no means to destroy Lord Voldemort's Horcruxes, so he hadn't gone to look for ravenclaw's diadem.
Once he learned the Fiendfyre Curse, he would give Toma little surprise.
Karl wasn't worried about not finding it; at worst, he would use Fiendfyre to clear out the Room of Requirement.
And he felt that if he just recited a few anti-poems like "If I become a Death Eater one day, I'd dare laugh at old Dumbledore for having no husband" inside, ravenclaw's diadem would just pop out on its own.
He estimated that Tom would also want to see who could be so brave right under Dumbledore's nose.
...
After eating lunch in the Great Hall, Karl was the first to arrive at the Transfiguration Class classroom and sat in the front row.
This unusual behavior aroused strong curiosity among the Hufflepuffs.
Everyone, as they passed Karl, pretended to glance at him inadvertently.
The expressions on their faces were easy to read: Did the sun rise from the west? Why are you here so early today?
Karl: (▔,▔)
"I feel misunderstood."
Shabi patted his shoulder, "Maybe you're misunderstanding yourself."
"Get lost! I was only late once!"
Stebbins couldn't help but laugh, "Buddy, we've had six classes since the start of term. You were late once, and arrived just in time twice. What do you think everyone will think?"
"But I was on time for three classes! We all arrived at the classroom together; did everyone forget?"
"You said 'we all together,' and a fifty percent probability, is that really low?"
Karl: ...
Is my good student image about to collapse?
No, it seems it already has.
Audrey then delivered another blow from behind him, "We're all guessing which class you'll lose points in next."
Stebbins remained silent because he had bet snacks on this class, and if he won, he would share half with his good brother.
Karl sat up straight, his expression resolute.
"Impossible! Absolutely impossible!"
"Watch closely! I'm going to get my points back this class!"