Held by Ravenclaw, Alan was taken by the other side to a cavern deep in the Black Lagoon around Hogwarts, where rocks and aquatic plants were hidden outside the entrance to the walls, a dry space carved out of the lake by magic, and anyone who found it and tried to approach it had to fight the tribes of merfolk outside who could be seen to be under control without access to air.

The walls of this massive cavern have a texture that looks like a natural formation depicted in demonic blood, and Eren can recognize the role of this through his current sensitivity to magic, which can detect the place by shielding it from prophetic spells such as divination, and the strong smell of sulfur from the Hell, the harsh lower plane, can also terrify most magical creatures and make them know to stay away from this place.

A foul smell of corruption caused Alan to turn his head to the side, some of Bai Sensen's heads were shaking in the distance, and Alan fixed on it to realize that these were zombies in Muggle armor, their scarred skin was an unnatural gray-blue, and the smell was that of the living dead resembling some resurrected by necromantic magic—they had no mind and seemed to be under the control of some strange-looking devil overseers.

"I'm building a mage tower. Ravenclaw waved his hand to stop the demons in the distance from trying to come and greet their masters, "Don't worry, these necromantic armies are being pulled directly from the underworld by me using necromancy to work as coolies. ”

Ravenclaw led Alan straight into the newly built tower, and he found himself entering a completely different room from the Ravenclaw tower he remembered, a staircase under construction stood in the middle of the completely undecorated hall, and the circular wall around the entire hall was evenly separated by three arches, and Ravenclaw led Alan directly into one of the rooms, and a strong smell of blood came to his nose

In the middle of the room, which felt slimy to step on, was a pool of blood-red, motionless water. And out of that strange, strange pool was bursting a pillar of blue flames. The flames reached the roof of the rooms on this level, and seemed to have been burning day and night for days.

And beside this blue flame, more than a dozen people who were imprisoned by bubbles were floating silently in it, while there were some bloody things wriggling on the floor, and from time to time some pieces of flesh allowed themselves to enter the pool of blood.

Although some of the magical research that Alan himself was already doing was a little unscrupulous, the "more civilized" underlying rule imprints of modern wizarding society still made him a little creepy when he saw this scene.

These twisted blood clots were apparently Muggles created by the magic of witches, who were imprisoned here looking down on their creator, Ravenclaw, with the remnants of their lives.

The house had a slimy floor because it was covered in bleeding and disgusting biological tissue, and they were crawling around the pool as if they were in eternal torment.

Ravenclaw looked like a raven in the darkness, and without saying a word, she led Eren towards the pool of blood in the middle. The silver threads sewn into her elaborate blue robes reflected the blue glow emanating from the pool of blood. The bloody flesh covered the slate floor with a disgusting carpet of bloody bodies, and it was only when they instinctively gave way to the Creator Witch that the wizard could see the floor wet with their slime.

Alan didn't say anything, just followed Ravenclaw, silently clenching the witch's pale, slender fingers to bring her warmth, and the two wizards now walked side by side to the blood-red, motionless water.

"Lord, master, spare me...... It hurts so much. A barely recognizable piece of flesh waved its deformed tentacles that looked like an evolution of the aorta, trying to get Ravenclaw's attention, and pleading in a slurred voice.

"The innocent Muggle women you tried pleaded with you in the first place. Ravenclaw lowered his head and tilted his head, and said to the lump of meat in a rather innocent tone, and then saw that the other party trembled his body but did not dare to say more, Ravenclaw also seemed to lose interest in them, and turned his head to look at Allen, " These are all guys who have falsely accused unlucky Muggles of being witches, or persecuted some young wizards who have just shown their magical riots but are incapable of protecting themselves, and although I myself have no interest in their identities, it is clear that if the choice of subjects is too haphazard, she will be sad if Helga finds out - let these sinners play their last worth. ”

Ravenclaw leaned slightly, reaching out his hand to touch the stillness of the pool of blood. The monsters around the pool began to exclaim in fear as they could make their voices, and those who couldn't tremble instinctively—as they had seen more of their companions fall into the blood-red water, only to wither and wrinkle and sink to the bottom of the pool.

Ravenclaw herself was not affected at all, she just muttered a spell and slowly withdrew her hand, she was now even paler, as if the color of plaster, and the witch whispered a little smugly, "Look." ”

Alan looked at it intently, and it was the same red magic stone that had flowed red among the three magic stones that the other party had given him to make the magic stone when he met Ravenclaw Remnant in the first grade—but it was not yet the color of the red he remembered.

"I don't have that much time to build up that much life for this material using conventional methods, so I can only overdraw the lives of these Muggle sinners. But it seems that they can't withstand this kind of power in a short period of time, so they can't maintain their original humanoid form and collapse into pieces of flesh, but in this way, the life force they contain is better than directly letting them enter in their humanoid form. Ravenclaw said as if he were exploring ordinary magical experiments with Allen.

Alen, who is neutral on many things, didn't think there was anything wrong with doing this, after all, he himself had used serial murderers to do some experiments before, which also reminded Alan of the now-unborn French alchemist Nicol Lemay: "Judging by his deeds and the fact that he was friends with Dumbledore, he probably wouldn't use Ravenclaw's method...... So he is...... It was collected during the outbreak of the Black Death, between 25 million and 50 million people, and the timing was right...... Paris is such a good place to be, I don't know if the Philosopher's Stone is 'recharged', and if needed, Nicol Lemay was lucky enough to replenish it during the plague and smallpox outbreak in Paris in the 18th century...... Six million people were buried in the catacombs of Paris alone......"

Ravenclaw was obviously a little surprised by the power of the plague: "Such a terrible Muggle plague......? I'm just using the gap to help you finish a half-finished product, and you'll collect the rest on your own in the last time transition. ”

"You know in advance what I'm going to do next time?" Allen grasped the gist of the other's words.

"The Philosopher's Stone is nothing more than a giveaway, and if you don't make it with you, it's wasted. Ravenclaw nodded, "You know a thing or two about the Deathly Hallows, right?"