After communicating with Headmaster Dumbledore, Karl had already formed a most logical chain of events.
Elvis Heller, who had been observing the magical staircases, was very likely connected to the Wizard who claimed to be Merlin a thousand years ago.
Because the movement of the magical staircases followed a pattern, and the fact that one could find the magic core of the Castle was something that, apart from the successive Headmasters of Hogwarts, likely only those who participated in its construction back then would know.
And that "Merlin" was also highly likely connected to Herpo the Foul; he might have helped Salazar Slytherin build the Chamber of Secrets and raised that Basilisk.
After all, if the method for raising a Basilisk were truly as simple as the rumors suggested, this wretched creature wouldn't have remained unseen for centuries.
Karl shared the same view as Headmaster Dumbledore, believing that when "Merlin" helped build Hogwarts Castle back then, he must have made some arrangements at the Castle's magic core, which was also the very goal of Elvis Heller.
That was why he knew of the Room of Requirement's existence and how to enter it, and luring Karl into it to encounter Lord Voldemort's Horcrux was likely a ploy to divert Headmaster Dumbledore's attention.
As long as Dumbledore was lured away from Hogwarts, Elvis Heller's operations would proceed smoothly, as the other Professors did not understand the secrets of the Castle.
However, he had not anticipated that Karl, due to Fire Treasure, had seen through his identity as a Dark Wizard from the very beginning and was also aware of the location of Lord Voldemort's Horcrux, thus knowing his sinister intentions.
He had also discovered his connection to Herpo the Foul through the accidental actions of the Niffler, Daisy, and by searching for sealing Charms and the magic core of the Castle, he had uncovered many secrets, linking him to the "Merlin" of a thousand years ago.
"Which secret passage is it?"
The Weasley Brothers took out the marauders map, opened it, and pointed out the location to Karl.
"Here, the one behind the mirror on the fifth floor, which leads to Hogsmeade Village."
"We have walked through it many times before; the space inside is very large, it doesn't even feel like a secret passage."
Karl recalled for a good while before finally remembering information about this secret passage.
This secret passage was supposed to collapse after the winter of 1992, and by 1993, it would be completely blocked and abandoned.
The original work did not explain the cause of the collapse, but now it seemed highly likely that it had a lot to do with Elvis Heller.
Could the magic core of the Castle be there?
Karl looked at the Weasley Brothers, "Can you lend me the marauders map for this period?"
George: "Of course, no problem. But are you planning to do something exciting? Can you take us two with you?"
Fred: "Is Professor Heller a Dark Wizard? Did he come to Hogwarts to cause trouble?"
Karl smiled slightly at the two of them, "Of course you can. Let's go, we will go find Headmaster Dumbledore and Professor Snape right now and discuss what to do together."
The Weasley Brothers: ( ⊙ ﹏ ⊙ )
"Never mind, Karl. We just remembered we have other things to attend to, so we won't accompany you."
"That's right! You must stay safe! If you encounter danger, remember to let Professor Snape take the lead!"
After saying this, the two of them bolted away, though it was unclear whether Dumbledore or Snape held more sway over them.
Karl subsequently found Charlie Weasley and Percy Weasley and pretended to pass on an order from Headmaster Dumbledore, instructing them to keep an eye on the two brothers and stop them from sneaking out at night.
This wasn't him backstabbing George and Fred, but rather for the safety of those two troublemakers to prevent them from encountering danger.
Easter was approaching, but the Little wizards of Hogwarts had no expectations for this holiday.
Because, as was tradition, the Professors of every subject would assign a mountain of homework to prepare for the final exams in advance.
Well... more than two months in advance.
For the top students, this was absolutely not a problem, but for the underachievers and the lazy ones, it was a nightmare.
They were not afraid of exams, and even had the Courage to fail, but the process of reviewing was too painful, especially with the hellish torture of a massive amount of homework.
Many Little wizards would ask Karl when they met him: "Are there any holidays left to celebrate lately?"
They were worried about the days of open-book exams ahead and hoped there would be an excuse to relax when the time came.
To this, Karl could only express his regrets; after all, the Qingming Festival was really not suitable for throwing a party.
So during this time, the underachievers and lazy ones began to look for a way out, and Summers became a sycophant to Cedric Diggory.
It was said that even when sleeping, he had to hug someone's thick thighs.
This rumor had currently spread throughout Hogwarts and had become the most explosive gossip among the Little wizards.
After all, although Summers was unremarkable, Cedric Diggory definitely had the bearing of a school heartthrob, a veritable source of hot traffic.
Not only did young Witches participate in the spreading, but some young Wizards were also very excited; one could only say that England had its own national conditions in this regard.
Cedric Diggory was so angry he nearly finished off Summers on the spot, and he urgently clarified the matter in the Great Hall.
"I warn you, don't talk nonsense! You are slandering me! Cho Chang! They are slandering me!"
Cho Chang comforted him very understandingly and took the opportunity to express her well-wishes.
Cedric Diggory: ┗ ( T ﹏ T ) ┛
"Things are not as they say! Listen to me, let me explain! I've been wronged!"
Watching the distraught Cedric Diggory, Karl found it impossible to keep a straight face.
He felt just like the two police officers in the movie *The Mermaid*, he really couldn't hold it in at all.
To prevent himself from laughing too loudly, Karl had to quickly divert his attention.
"What are you looking at?"
Nina shook the newspaper in her hand, "The Daily Prophet, there have been quite a few strange things happening lately."
Karl immediately cast the matter of Cedric Diggory aside, "Let me see."
Nina handed the newspaper to him, "It's the few reports right in the middle."
"Extremely Dangerous! A terrifying incident is suspected to have occurred in the forests within Albania, with a large number of animals dying inexplicably."
"Outrageous! Evil grave robbers have appeared in Godrics Hollow, and parts of the cemetery in the valley have been severely damaged."
"Fear Returns? Numerous organized Dark Wizards have invaded Knockturn Alley, their heinous acts highlighting the incompetence of the Ministry of Magic."
"..."
After reading these reports, Karl had only one thought in his mind: It's here! Headmaster Dumbledore's guess has come true!
Elvis Heller really had exhausted all his methods to lure the tiger away from the mountain, stopping at nothing.
What would organized Dark Wizards make people think of? Naturally, the Wiccan Purity Party and Death Eaters.
And he was really using Lord Voldemort as a prop; as long as he could lure Dumbledore away, he didn't care at all about the life or death of Lord Voldemort.
The most critical thing is...
Elvis Heller even dared to touch the cemetery in Godrics Hollow; he couldn't be crazy, could he?
One must know that Dumbledore's mother and sister were buried there; such an act was purely a death wish.
When it comes to courting death, Karl was willing to call Elvis Heller the strongest.
Next, it depends on what the Headmaster does.