"Hmm..."

Lilith hurried to Arthur, trying to ask if her guess was correct. Before she could finish speaking, Arthur preemptively confirmed her guess.

"It's so dangerous. Arthur, you'd better get out of here with me..."

As soon as I thought of it, there was still such a monster hiding in Hogwarts Castle, counting the one that was destroyed in the secret room before, three monsters with terrifying strength appeared in less than two months......

'Who the hell told me that Hogwarts School of Witchcraft and Wizardry is the safest place in the UK!!! ，

That's a monster that even Headmaster Dumbledore and Master Grindelwald can't defeat together, why did he appear at Hogwarts so many times?

"Isn't that already solved by me... What are you afraid of?"

After arriving at the torikai corridor, Arthur looked back at Lilith, whose face was a little pale, and then pointed to the black clouds in the sky and spoke.

"I'm here to cover you, go ahead!"

At this time, outside Hogwarts Castle, Dumbledore was still dealing with the seven Death Eaters, and no matter how many times he killed the black mud monsters on their bodies, these Death Eaters would turn out of the black cloud again, and they would bring a new black mud monster with them to resist Dumbledore's magic.

Take attrition tactics to the fullest.

Of course, Dumbledore wasn't always on the back foot, and he also took advantage of the Death Eaters' loss of protection from the Black Clay Monsters to kill three Death Eaters.

"You're not going to buy me, are you?"

There was no nervousness on Arthur's face, and his tone was very casual, as if he didn't take his plan seriously at all. Lilith's face changed, and Arthur had the idea that she wanted her to die.

After all, he is a saint of Master Grindelwald, and he is a female cadre lurking in Hogwarts.

And Arthur has always been a Hogwarts person, and it is not impossible for him to destroy himself with the help of the hands of the Death Eaters.

[In other words, it is the best way to read aloud and listen to books at present,

She was the only one around Lilith, and she was on her own.

"What do you want to do?!"

At this moment, two Death Eaters, who had just obtained black mud from the black cloud, turned out of the black cloud, and saw that Lilith wanted to get close to the black cloud, and the two quickly blocked in front of Lilith.

Worst!

Seeing the two Death Eaters who suddenly appeared in front of her, Lilith instantly frowned, if it was a Death Eater, she could completely deal with the black mud on the other party's body first, and then kill the other party. But with two people, it would be difficult for her to quickly resolve the battle.

And at this time, three more Death Eaters strung out of the black cloud and completely surrounded her with a flanking attack from left to right.

"Transfiguration! Katyusha launch!"

Just when Lilith was in danger, Arthur, who was standing in the torifed corridor, quickly waved his wand and turned the stone balcony in front of him into a giant Katyusha rocket launcher using a transformation charm. Sharp stone cannonballs flew through the air and struck at the Death Eaters who surrounded Lilith.

Due to the speed of the shells, as well as the large and dense number of shells. In an instant, the three Death Eaters were blasted to pieces, and the black mud on their bodies was broken into more than a dozen pieces, clinging to the corpse's stump and falling downward.

When the remaining two Death Eaters saw the sudden death of their companions, they were so frightened that they hurriedly used apparition to get out of here.

Black Mud Monsters can withstand magical attacks, but their physical defense is almost zero.

Arthur officially took advantage of this weakness and used the Transfiguration Charm to transform into a dispenser filled with stones, and because of the large number of dispensers, he named this move "Katyusha".

"Well done! Little brother William!"

Lilith laughed, her expression changed and she flew quickly towards the black cloud. After sensing Lilith, the intruder, the black cloud did not continue to rain towards Hogwarts below, but released a huge torrent of black mud, trying to resist Lilith.

"Filth dissipate!"

"Filth dissipate!"

Lilith in the air and Arthur in the corridor very tacitly unleashed the "Filth Retreat" spell towards this torrent of black mud at the same time. After Lilith's spell wiped out the first wave of mud, she quickly changed the direction of her flight and continued to fly towards the black clouds.

And Arthur's spell just resisted the torrent of black mud that wanted to pursue Lilith.

When Arthur's spell was gone, and the torrents of black mud tried to pursue Lilith again, Lilith had already come to the vicinity of the black clouds.

She quickly pulled out the Philosopher's Stone, threw it into the dark clouds with all the strength of her body, and then quickly turned and flew in Arthur's direction. ….

Rumble! Rumble! Rumble!

There was suddenly an additional foreign body in its body, and the moment this foreign body entered its body, it released a huge amount of incomparably positive life attribute magic, and began to annihilate with the power in its body.

This caused the black cloud to begin to change shape quickly and irregularly, and blue-purple lightning began to flash in the body of the pitch-black mist, like a thundercloud. At the same time, the evil ominous aura it emitted became violent, blowing away the surrounding Death Eaters who tried to escape into its body.

Headmaster Dumbledore, who was chasing these Death Eaters, saw the strange black cloud change, and his face was gloomy, thinking that something bad was going to happen.

But he had no way to deal with this black cloud at this time, so he could only shift his gaze to the Death Eaters who had been sent back.

Without the protection of the black mud, they were no match for the great Albus Dumbledore.

"Since the thing you just transformed can shoot stones! Why don't you shoot the Philosopher's Stone into the dark clouds with it?!"

Arthur, who returned to Lilith's side, looked at Arthur with his hands on his hips and complained angrily.

"What if you shoot the Philosopher's Stone? ***！」

Arthur looked at the belly-eating black cloud in the sky and smiled slightly.

Although he didn't know what was going on inside Black Cloud, he could clearly see that the Philosopher's Stone had indeed caused damage to Black Cloud.

As time passed, the black clouds over Hogwarts Castle finally couldn't maintain their form

With a loud bang, the black cloud exploded, spewing out a large amount of white mist in all directions.

Then, Arthur and Lilith saw a star that shone with a dazzling blue light, and burst into countless blue stars.

And that white mist against the blue starlight is like a galaxy in the night sky, gorgeous and beautiful, just look at it, this rare spectacle can not be forgotten by your brain.

"The Philosopher's Stone is gone, it's your attention. When Headmaster Dumbledore asks, you'll buy me backhand!"

The star that turned into a blue star, Lilith didn't have to guess that it must be the Philosopher's Stone.

Although the dark cloud has been eliminated, the crisis at Hogwarts School of Witchcraft and Wizardry has been resolved. But the Philosopher's Stone is the only magical treasure in this world that can make people live longer, and if it is destroyed like this, Headmaster Dumbledore must be very angry.

Lilith speculated in her mind.

"How did you become so timid today, you weren't like that before, Professor Skaantina."

Arthur said, rolling his eyes. He was now a little annoyed with the saint who talked too much.

As the black cloud is destroyed by Arthur and Lilith with the Philosopher's Stone. The Death Eaters who had invaded Hogwarts with the help of black mud also retreated.

Leaving behind a puddle of black ocean and dozens of house-elves possessed by black mud and turned into monsters.

"Filth dissipate!"

"Filth dissipate!"

「......」

Seeing that Headmaster Dumbledore and several professors were casting the "Filth Retreat" spell on the black ocean below, Lilith was not standing with Arthur in the bird-feeding corridor to fish, waving her wand and appearing above the black ocean to join the team to disperse the black mud.

She is still the Defence Against the Dark Arts professor at Hogwarts School of Witchcraft and Wizardry, and if she continues to be lazy, she will definitely be disliked by the other professors. ….

The Black Ocean was a huge collection of countless black mud, and even with Lilith's joining, it would take Dumbledore and his gang about ten minutes to completely wipe them out.

And those house-elves who were possessed by the black mud did not have the black mud on their bodies to replenish the black mud on their bodies, and the black mud on their bodies was easily eliminated by Professor McGonagall.

The battle was finally over, and Dumbledore, who had consumed too much mana, gave a few brief explanations to Professor McGonagall and the others, and then returned to the Headmaster's office.

And Arthur, who was standing in the torikai corridor and watched the whole process, also turned around and walked in the direction of the principal's office.

"Arthur, you destroyed that black cloud, right?"

On the chair, a tired Dumbledore saw someone coming in, and after opening his eyes to confirm that it was Arthur, he slowly asked.

"It doesn't count. I'm just a porter of the Philosopher's Stone. It is the energy of the Philosopher's Stone that will really destroy the black clouds."

Arthur shook his head and was very honest about his use of the Philosopher's Stone.

The first time the Philosopher's Stone was taken out of the Mirror of Eris, Dumbledore should have sensed it. So it's completely unnecessary to hide this matter.

"Hey... Originally, I was discussing with Nicol what to do with the Philosopher's Stone, and he thought that the Philosopher's Stone should be destroyed as soon as possible before it could be taken by Voldemort...... I didn't expect it to end like this."

When Arthur told the truth about the destruction of the dark cloud and did not take out the Philosopher's Stone, Dumbledore realized that the Philosopher's Stone no longer existed.

The Philosopher's Stone is the greatest work of his friend Nicol Lemay during his life as an alchemist. It is also a treasure that has allowed him and his wife to live until now. The destruction of the Philosopher's Stone meant that his old friend would soon be dead.

At the thought that he was about to lose another old friend, Dumbledore had to lament that the years were unforgiving.

"By the way, how did you come up with the idea of using the power of the Philosopher's Stone to destroy that black cloud?"

The memories of his old friend ended, and Dumbledore looked at Arthur again.

"Sixth sense, or what my abilities have revealed to me."

Arthur said in a calm tone. He couldn't have told Headmaster Dumbledore that he just

Think so, and then experiment.

"Hmm... Harry and Ron are still in the Magic Mirror level. Bring them both out."

As the creator of the Magic Mirror level, Dumbledore could sense anyone who entered the level. He rubbed his temple with his hand and said to Arthur.

He's too tired right now and needs a good rest, and Arthur can help him with this kind of thing.

"Yes, Headmaster Dumbledore."

Arthur nodded, and turned to walk out of the principal's office. The most important thing has been told to Dumbledore, as for how Voldemort created such a terrifying black cloud, let's wait for when Headmaster Dumbledore has rested, and then discuss.

Arthur walked down the corridor towards the entrance of the Philosopher's Stone level, wondering if he should exchange a spell from the audience that would be enough to destroy the black mud of the black cloud level.

After all, the power of the Filth Retreat release is based on the mana consumed by the wizard.

And the black cloud that had just been over Hogwarts Castle, Dumbledore couldn't get rid of it.

What if another black cloud appears? The Philosopher's Stone is gone, and just to expect a wizard to use the "Filth Retreat" to destroy the black cloud, it will take at least a hundred wizards of the Auror level to do so.

Voldemort can create a dark cloud, and he must be able to create a second or a third......

So, Arthur had to think about this serious question.

"Rather than destroying... Is it possible to dominate them?"

After freeing Harry and Ron from Kara, the Devil's Gateway, Arthur watched as the Devil's Net only restrained moving objects and released motionless objects.

He had a flash of inspiration, and a new idea occurred in his mind.

Destroying the black mud requires a huge amount of magic power. But what about just controlling them? That way, you don't need much mana.......

Grazing small Wen