I built a floating city in Hogwarts.

——No, the arm reattachment cannot be said to be intact, and it can even be said that the recovery is very rough:

Levin clearly found that the reattached arm was a little crooked - the texture of the interface skin was not completely aligned - and it was also a little longer, resulting in one arm being longer than the other, which looked extremely uncoordinated.

But this is the most terrifying part.

Even with this crude method, the troll still completed the reattachment of the broken arm, and the reattached arm can still be used flexibly.

This shows that the troll relied entirely on his incredible recovery ability.

But how is this possible?

I have never heard that the trolls in the world of Harry Potter have such recovery ability!

What is going on?

Levin's brain was working rapidly, and the database composed of a large number of magic books was of no help at all.

Instead, the memory of his previous life gave him a clue:

"This troll, could it be that it has merged the characteristics of trolls from other worlds!"

Thinking of this, Levin suddenly realized.

Yes,

Ciri from the wizarding world can appear in this world, and the water ghost can appear in this world, so why can't the trolls in this world merge with the trolls from other worlds?

After all, they are all the same species.

Unlike the trolls in the Harry Potter world, whether in World of Warcraft, DND or the wizarding world, trolls are a race known for their regenerative abilities.

The wounds of trolls heal very quickly. If the monster loses its hands, feet or even its head, those dismembered parts will still maintain life activities. Some trolls will even directly connect the broken limbs back to their original place. What's more exaggerated is that if the trolls don't put the broken limbs back to their original place,

Once reattached, the broken limbs will even fight automatically like living things.

You will see a crawling hand, a hopping leg, or a biting head on the battlefield - until the troll reattaches the broken limbs or grows new ones.

Obviously, the troll in front of him can reattach broken limbs because he has absorbed the abilities of his kind from another world.

If the original troll's combat power is equivalent to that of level 5-6, then this guy who has both the magic resistance of the troll and the regeneration ability of the troll can be completely equivalent to a wizard of level 7-8.

But the troll's super recovery ability is not unsolvable.

Levin's knowledge of the other world told him that only strong acid and fire can prevent the regeneration of the troll's flesh.

"Isn't this just in time?"

Levin sneered complacently.

"I just researched the [Fireball]."

As he spoke, he waved his wand and chanted the magic he had just learned today:

"【"Monster Summoning Spell"

Instantly, a huge North American bison appeared and stood in front of the troll.

The bison was just an ordinary beast, of course it couldn't withstand a few blows from the troll, but before the bison fell, the troll couldn't threaten its summoner.

Seeing the troll screaming and screaming because of the bison, Hermione's eyes lit up.

""So the buffalo curse can be used like this? It's amazing!"

Levin's spell did not end.

While the troll was at a loss, Levin began to recite the second spell.

"【Heat Ray】！"

A blazing orange-red beam of light shot out from the tip of the magic wand and shone directly on the giant monster. The shone part instantly became charred and carbonized, and bursts of white smoke came out.

""Roar! Roar!"

The giant monster was restrained by the fire element. The scorching heat brought intense pain, making it roar in pain.

The high temperature rays passed through the giant monster's chest, leaving a deep"one" scar. The giant monster was in so much pain that he didn't even care about the bison. He could only cover his wound and roll on the ground.

But this was not the end of his pain.

"【Heat Ray】！"

Another blazing beam of light shot out, this time Levin was aiming at the troll's newly reattached arm.

Under his careful control, the ray shone directly on the joint of the troll's shoulder and slowly passed through.

The joint of the newly grown limb was already fragile, and the [Scorching Ray] now exerted the effect of a superhuman heat ray, burning the newly reattached arm again. The poor troll turned back into the Condor Hero.

After losing his right arm again, the troll wailed and picked up his right arm with his only remaining left hand, connecting it to the wound, trying to re-enact the scene of reattaching the broken limb.

But this time, its regenerative power had been suppressed by the fire element, and no matter how it connected it, it would not produce any effect.

The stupid troll had no idea what was going on, and could only try again and again, and rage in frustration again and again.

Levin was finally ready for the last spell.

"【Fireball】！"

Normally, he would not use such a large-scale destructive spell in such a narrow room.

However, the giant monster is a strong creature after all, and this is the only spell in Levin's spellbook that can make the final decision.

After casting it, Levin stood in front of Hermione and used [Frost Armor] to protect himself and the little witch.

""Boom!"

The moment the blazing fire element touched the giant monster, a violent explosion occurred.

The whole women's restroom was suddenly ablaze.

Even though the center of the explosion was seven or eight meters away from Levin, the aftermath of the flames still destroyed most of the [Frost Armor].

When Levin turned around, the giant monster was already charred and fell to the ground, no longer breathing.

If Levin hadn't canceled the summoning of [Monster Summoning] before casting the fireball spell, the North American bison would have become a roasted whole cow.

"Phew, it's finally done."

Looking at the pile of charred corpses in front of him, Levin couldn't help but wipe away the sweat that didn't exist.

【Frost Armor not only protected him but also provided an air conditioning effect. It was hard to sweat in this situation.

Hermione also exited the invisible state and stood beside Levin, looking at the dead monster in fear.

If Levin hadn't arrived in time, she couldn't imagine what would have happened.

About a few seconds later, footsteps sounded outside the toilet door, and a familiar shout came from outside the door:

"Hermione! Are you there?"

It's Harry and Ron, they're looking for Hermione too.

"I'm here!"

Hermione responded.

Harry and Ron actually remembered to come to her, which touched Hermione a little. These two friends are really loyal.

Of course, what moved her the most was Levin who came to her at the first time.

No one could bring a sense of security more than him.

""Hermione, be careful, there's a troll nearby...ah! What is this?"

Harry and Ron followed the sound into the toilet, and were immediately frightened by the troll's corpse.

Before Levin could explain anything, footsteps were heard again, and a moment later, Flitwick and McGonagall, the deans of Ravenclaw, rushed over first, followed closely by Snape, and Quirrell, who had woken up, was at the end.

Quirrell only took one look at the charred corpse of the troll, and then he sobbed weakly, clutched his chest tightly, and wailed exaggeratedly again before collapsing on the ground.

Snape bent down to look at the troll, while Flitwick and McGonagall looked at the four little wizards.

"Levine Green, what the hell are you students up to?"

McGonagall said, with cold anger in her voice.

"You're lucky you didn't get killed by it. Why didn't you listen to the warning and stay in the dormitory?"

"I didn't hear any warning at all."

Professor McGonagall's questioning made Harry and Ron panic, but it didn't make Levin nervous at all.

Long before looking for the troll, he had already laid the groundwork:"I just ate too fast at the dinner, my stomach felt a little uncomfortable, and I came out to use the toilet. I didn't hear any warnings."

After that, he went a step further and questioned the other party in turn:"I didn't expect to encounter a troll in Hogwarts, which is known as the safest school in the world. I also want to ask, what tricks is the school doing?"

Snape glanced at Levin with suspicion, as if judging the truth of his words.

And Flitwick asked with concern:"Levin, you are not hurt, right?"

After getting a negative answer, he turned to Professor McGonagall and explained for Levin:"You really misunderstood, Minerva, Miss Clearwater just mentioned Levin to me. He did go to the toilet in the middle of the banquet. It is normal that he didn't hear the warning."

"Oh - if that's the case... I'm sorry, child, this is indeed a mistake made by Hogwarts."

Professor McGonagall was embarrassed. In fact, her anger was entirely out of concern for her students, so she turned to the three little lions and waited for their explanation.

"Miss Granger has been staying here because she is sad," Levin explained for Hermione,"She didn't attend the Halloween party from the beginning. As for Harry and Ron……"

He glanced at the two of them, who all said in unison,"We're here to see Hermione! We want to remind her about the troll. In fact, we only arrived a little earlier than you, professor."

After hearing everyone's reasons, Professor McGonagall's eyes softened.

"I think I understand the situation." She coughed a few times, and first looked at Levin apologetically:"Mr. Green, you solved the troll by yourself, for which I will add 20 points to Ravenclaw. I have to say that not many first-year students can compete with an adult troll. You have indeed proved your talent."

Flitwick also praised as he looked at the charred corpse,"Although I don't know how you killed a troll with the fire spell, I have to say, it was a well done job!"

"As for you," Professor McGonagall looked at the remaining three young wizards,"Miss Granger, since you have excusable circumstances, I will not deduct points from Gryffindor for this. But Mr. Potter and Mr. Weasley, each of you has deducted 5 points from Gryffindor. Next time something like this happens, you should take the initiative to find the professor instead of joking with your own lives without authorization - if Mr. Green hadn't been there this time,……"

Professor McGonagall did not continue. She did not want Levin to think that this was an encouragement to him.

"Now, you'd better hurry back to the common room. The students are enjoying Halloween dinner in their own colleges."

On the way back to the common room, Levin had been dealing with the entanglement between Harry and Ron.

They couldn't imagine that a little wizard of their age could actually defeat a troll head-on.

As for Hermione, the girl smiled the whole time - there was no trace of the frightened look before.

The three people in front of her made her feel friendship for the first time in Hogwarts, especially Levin.

It was not until today that Hermione felt that she had made friends.