I've already become a Hogwarts professor, and the system only just appeared.

Ding! Congratulations, host, your Polymorph skill has reached LV10. You will automatically receive the quest: Epic Proof (Polymorph).

Mission requirements:

Perform the transformation from matter to energy 10000 times (0/10000).

Perform the transformation from energy to matter 10000 times (0/10000).

Perform 10000 transformations from living to non-living (0/10000).

Quest Reward: Choose one of the following three attributes as your epic trait.

1. Transformation Overload: Reduces the mana cost of casting Transformation by 30%.

2. Intelligent Transformation: Grants the creature you transform into a certain level of intelligence.

3. Elemental Spirits: Grants your Animagus the ability to take on elemental forms.

After reading the information displayed by the system, Su Yu smiled. Compared to the Epic Proof of Alchemy, the Transfiguration quest seemed to be much easier.

Although practicing each of the three transformation methods 10,000 times is not easy, it is much more practical than the ethereal "creating an epic alchemical item" of alchemy. It just takes a little more time.

The three bonus traits are also useful, especially the third one, which allows Animagus to have an elemental form.

As is well known, a wizard's Animagus form can only transform into an ordinary animal. However, having this ability would break this rule and allow one to transform into a magical creature.

Su Yu was somewhat tempted by such an offer and didn't know which option to choose. Fortunately, completing the task would take a lot of time, so Su Yu could take his time to think and make his decision.

After completing the upgrade, Su Yu transformed into a crow and arrived deep in the Forbidden Forest. He stood on a protruding stone platform, closed his eyes, and carefully sorted through all the knowledge about alchemy and transmutation in his mind.

Time passed quickly, one hour, two hours... until the bright moon hung high in the sky, Su Yu suddenly opened his eyes, and the magic wand had appeared in his hand.

With a casual wave of his wand, a large tree not far in front of the stone platform transformed into a giant monster with thick skin and flesh.

The giant seemed to have just woken up. After looking around, it quickly spotted Su Yu, roared, picked up a nearby tree, and charged towards Su Yu.

Su Yu continued to wave his magic wand, and soon the surrounding stones changed, turning into machine gun turrets engraved with magical runes.

With a whoosh, the magic machine gun fired several spells rapidly, including petrification, disarming, and explosion spells.

However, the troll's defense was not simple. It raised its arms to block its head, and the power of these spells was only around LV5-6, so they did not cause much damage to the troll.

So Su Yu changed his approach. He waved his wand again, and this time what shot out of the machine gun turret was no longer a spell, but real bullets.

Moreover, these bullets were imbued with elemental energy, including fire, frost, and lightning. When the bullets hit the giant, the effects were quickly apparent.

Chapter 118 I Got You (Part 1)

Su Yu saw the bullets spinning and embedding themselves into the giant's skin, with frost, fire, and lightning elements gradually spreading, causing the giant to howl in pain.

Not enough, not enough, this intensity is not enough, Su Yu thought to himself, his wand didn't stop, he continued to cast transformation and alchemy spells on the bullets.

Then, in the next moment, the bullets embedded under the giant's skin exploded violently, sending blood and flesh flying everywhere in an extremely gruesome scene.

But Su Yu's test wasn't over yet. He saw the troll raise one foot, about to take a step forward. With a flick of his wand, the soil beneath the troll's foot flowed and quickly turned into a landmine.

A landmine made from an alchemical bomb, with a power roughly equivalent to the one Su Yu used to blow up the bouncy pot. When the giant stepped on it, it made a loud bang, and a small mushroom cloud rose up.

When the smoke cleared, the giant was lying five meters away, one of its legs missing. Su Yu smiled, it seemed that the combat mode he had imagined was indeed feasible.

"You've been watching for so long, you should come out by now!" Su Yu turned his head and said to a corner of the forest.

The next moment, a black centaur emerged from behind the tree. He looked somewhat dazed, glancing at the giant lying on the ground every now and then, clearly terrified.

At this moment, Bain realized how accurate the Elder's prophecy had been; he didn't recognize the machine gun emplacements and landmines.

But Bain knew that if this man used these things against the centaur tribe, the tribe would most likely be wiped out.

Upon approaching Su Yu, Bain was extremely humble. He knelt on one knee, clenched his fist across his chest, and performed the highest salute of a centaur: "Good evening, esteemed Professor Su Yu!"

Su Yu was quite satisfied with Bain's attitude. Since others were welcoming him with smiles, he couldn't be too domineering, so he said, "Get up. Don't talk about what happened here for now."

"Don't worry, Professor Su Yu, we centaurs hardly ever have any contact with the outside world, and we're very tight-lipped!" Bain immediately assured him.

Su Yu nodded and continued waving his wand, quickly restoring everything to its original state, as if everything that had just happened was an illusion.

I was thinking of visiting the centaur tribe, but when I checked the time, I realized I needed to check on the progress of the compound decoction for the three little ones.

According to Su Yu's estimation, the three little ones should succeed in the next few days, so he has been transforming into a crow every day and squatting in the girls' restroom on the second floor.

Su Yu had been waiting for this compound decoction for a long time, especially after he completed the Animagus transformation. Su Yu really wanted to experience what the difference was between becoming a human and becoming an animal.

He had tried to approach Snape, but Snape refused. Firstly, the Ministry of Magic strictly controlled Polyjuice Potion, and secondly, the brewing time was too long for Snape.

The three little ones happened to have cooked this pot, so Su Yu had to keep a close eye on them to prevent them from drinking the compound decoction and leaving him with nothing.

Su Yu had also tried to install a surveillance camera in the girls' restroom on the second floor, but Myrtle always managed to spot it. Every time it was installed, Myrtle would scream at the surveillance camera.

After explaining for a long time, Myrtle even mistook him for a perverted voyeur, so Su Yu had no choice but to switch to manual monitoring.

Seeing that Su Yu was about to leave, Bain took the initiative to show goodwill and said, "Professor Su Yu, are you going back? You can ride on my back, and I'll see you off!"

Su Yu glanced at Bane, inwardly thinking, "If it were a female centaur, I might give it a try, but you're a male centaur... ugh... disgusting..."

Su Yu couldn't directly transform in front of Bane, so he took out a whistle and blew it. Less than a minute later, a dark figure darted out of the forest—it was Coal Ball.

……

As Su Yu left the castle, Harry, Ron, and Hermione secretly went to the girls' restroom on the second floor to continue brewing their Polyjuice Potion.

Because Myrtle lives here, and she's always crying and making a scene, no other young wizards dare to come to this washroom except for the three of them.

Hermione was overjoyed: "Our potion will be ready soon!"

Harry said, "That's great! I saw Malfoy on the list of those staying at school for Christmas!"

Ron's eyes lit up: "That means the Christmas holidays will be the best time for us to take action."

Hermione nodded: "That's right, think about it, the school is sparsely populated, so we can easily sneak into the Slytherin common room."

But Harry was a little worried, saying, "But I don't see Goyle and Crabbe on the list."

Ron waved his hand: "Don't worry, Harry, those two idiots always follow Malfoy's lead. As long as Malfoy stays, they'll stay. As for Pansy..."

As he spoke, Ron looked at Hermione, who smiled confidently: "Don't worry, I've already inquired. Pansy Parkinson will stay at school, and I've already got her hair."

Seeing the golden hair Hermione pulled out, Harry felt a sense of urgency and said, "My God, Hermione, you're amazing! How did you do that?"

Hermione raised her head proudly and said, "I got it from her clothes when she wasn't looking."

“Then what do we do? We haven’t gotten Gore and Crabbe’s hair yet,” Ron said, somewhat frustrated.

Hermione rolled her eyes at him, feeling that her teammate was really too difficult to manage, and said, "It's very simple. We just need to put the sleeping potion in the cake, and then use the levitation charm to put the cake in front of them, and they will eat it on their own."

Ron looked at her with disgust: "Stop it, Hermione, how could anyone be so stupid?"

Hermione crossed her arms and said, "I've already successfully fed them once, but I didn't use any potions."

Ron was stunned, while Harry gave Hermione a thumbs up: "Hermione, you are really amazing. We can't do anything without you."

Hermione was a little embarrassed by the compliment. Just as she was about to speak, a man's voice came from the doorway: "Good evening, little ones. Look what I caught. You seem to be plotting something shady here?"

The newcomer was Su Yu. Upon seeing the three little ones, he sprang up from the ground like startled rabbits. Hermione hurriedly tried to hide the cauldron.

Su Yu naturally couldn't let them succeed, as it would be terrible if the potion was spilled. So he took out his magic pistol and used three immobilization spells to freeze the three people in place.

Blowing away the non-existent smoke from the muzzle of his gun, Su Yu tucked the pistol back into his waistband, stepped over to Hermione, glanced at the potion in the cauldron—it looked somewhat like eight-treasure porridge, but the taste was utterly repulsive.

"Compound decoction! What are you trying to do?" Su Yu asked, feigning surprise and anger.

The three children were terrified. Although they were immobilized, they could still speak. Harry spoke first: "Professor Sue, we suspect that Malfoy is the Slytherin heir, so we are going to transform into Crabbe and Goyle and find evidence around Malfoy."

Chapter 119 Got you?

Su Yu put the crucible away and then released the immobilization spell on the three little ones. Seeing them standing in a row with their heads down, looking timid and submissive, Su Yu couldn't help but smile.

“You guys overestimate Malfoy. He’s not qualified to be Slytherin’s successor. Alright, our teacher is handling this. You should all go back now!” Su Yu said.

Just as the three were about to leave, Su Yu suddenly added, "By the way, because you didn't come home last night, I have to deduct 10 points from each of you."

With several colleges deducting points, the next stage requires 1,000 points, which Su Yu estimates may not be achieved by the end of the academic year. He must not easily give up any opportunity to deduct or add points.

After the three left, Su Yu took the crucible, knocked on Snape's office door, handed him the Polyjuice Potion, and asked, "How is this potion?"

Snape leaned forward slightly, then frowned, pinched his nose, and said, "A poor Polyjuice Potion. This level of quality can only make the transformation effect last for half an hour at most. Did you brew this?"

However, Snape himself immediately gave a negative answer: "No, no, you are not skilled enough to brew Polyjuice Potion!"

Su Yu's face immediately darkened: "Who do you think you are?"

"It's obvious they look down on you. Tell me, who made this for you? I bet it was one of their students, Gemma Farley? Right?"

Snape took the crucible, placed it on a special stand for brewing potions, and began to heat it, stirring it regularly.

“Hermione Granger!” Su Yu said Hermione’s name.

Snape was taken aback and looked up: "Impossible, she's only a second-year student, she can't possibly master such a complicated potion-making process."

“But the facts are right in front of you. I think you should pay more attention to this girl. She’s very smart, just like Lily,” Su Yu said with a shrug.

But upon hearing Lily's name, Snape's already gloomy face darkened even more: "Shut up, you can leave now. I'll give you the potion tomorrow; it should be at least 80% effective."

"Alright, alright!" Su Yu said helplessly. Snape always reacted like this whenever Lily was mentioned. Even after all these years, he still hadn't gotten over it.

After leaving Snape's office, Su Yu was about to go back to sleep when Harry sent him another message: "Professor Su, that voice is back again, it's talking!"

Upon seeing this, Su Yu's expression changed, and he immediately opened the Marauder's Map. Harry was currently in a classroom on the third floor corner, while there were still three students wandering outside the school.

The Weasley twins, and a Ravenclaw girl named Zola!

"It's you two again! I have to deduct points from your score when I have the chance!" Su Yu was really angry. Why did it always have to be these twins?

Now that they had found the person, Su Yu was no longer in a hurry and asked Harry, "What was that voice saying?"

Harry replied, "It's saying: You bastard... how dare you hurt me... I'm going to kill you... kill you..."

Injured? What happened? The basilisk was injured? Who could it be? Looking at the text Harry sent, Su Yu was full of question marks: "Are you sure you didn't hear me wrong?"

“You heard me right, Professor Sue!” Harry confirmed.

Su Yu thought for a moment and then asked, "So which direction is that sound heading now?"

This little girl named Zola clearly couldn't have hurt the basilisk. Su Yu wanted to chase after her to check, but Harry's answer confused him even more: "Its voice has stopped."

"Don't move, I'm coming." Su Yu arrived at Harry's classroom, full of questions, and asked, "Harry, tell me in detail, what happened to you before you heard that voice?"