Harry hissed and gasped.

This familiar feeling.

It is even more "heartbreaking", and the magic is full of magic in the body.

This is the "Thunder Elixir".

In stormy weather, you can increase your strength and dexterity, and of course, the new potion boiled in the new recipe seems to have the effect of enhancing your magic power.

Unfortunately, today is not a thunderstorm, so I can't test the effect of the potion. He could use weather spells, but Harry wasn't proficient enough to do it with a simple breeze and drizzle, and he was still a little short of summoning a thunderstorm.

Harry bottled the potions in the cauldron into three copies.

He took out the parchment paper again and calculated the cost.

Even if you don't count the wear and tear used in the previous experiment, just three bottles of potion will cost more than two hundred Galleons The venom of the eight-eyed giant spider was hunted from the Forbidden Forest by itself, otherwise the cost would be even higher.

Harry sighed.

Fortunately, I have a good godfather and some savings in my hand, and a bottle of potion is really expensive.

And that's just the first bottle.

A witcher can't just have a potion bottle.

In less than a week, Harry tossed out a second potion, "Killer Whale", its original effect was to effectively increase lung capacity, and after Harry's research, using a series of materials such as mermaid blood and gill sac grass, it greatly improved its effect.

He himself had tested it himself, and the potion effect lasted for three hours, allowing him to breathe underwater without growing ugly cheeks, and as for allowing him to be as well as underwater, as on the ground, without being blocked by water.

In the Black Lake, he had a good experience, the feeling of flying freely without borrowing external forces.

After committing suicide, Harry's research and development of potions was in trouble.

His favorite blizzard, he had never been able to get his hands on it, and he couldn't even find many magical materials that could correspond to this kind of potion that further strengthened his senses.

The full moon, owls, and swallows are also a little difficult to achieve, and the materials are all there, the blood of the unicorn voluntarily, the juice of Hoklap, and the tears of the phoenix, but the blood of the unicorn is too pure, and almost all poisons will be purified.

It's hard to have the overbearing effect of the "Thunder" potion.

And it's expensive.

Phoenix's tears are priceless, the bottle Dumbledore gave him is already halfway tossed, and Harry is trying to figure out how to get another batch.

Then again, can the tears shed by beating the phoenix cry still heal?

The blood voluntarily donated by a unicorn is even more rare, an ounce of blood costs two hundred Galleons, but even if it is so expensive, it is still the best-selling product, once the wind is released, there is such unicorn blood arrived, and the entire Tumbledown Alley can be overcrowded.

Sirius even got into a fight with Snape over this vial of blood, and he was beaten to the point that his nose and face were swollen, until Snape taunted, Sirius said that he had bought it for Harry, so he took the vial.

Infuriate him.

That night, he told Professor Flitwick that he would have to make up lessons with Harry during the summer vacation.

Wednesday, before Defence Against the Dark Arts class.

Ron pulled a moon phase map: "It's a full moon these days, it can't be Professor Snape again."

Hermione frowned, a little tangled.

She also doesn't like Professor Snape's teaching style very much, she can listen to half of the swear in a class, and most of them will be related to werewolves, but on the other hand, who knows if another professor can still have the same level of teaching as Lupin and Snape.

"Actually, Professor Snape is pretty good." Ron turned around, pulled into the book floating behind him, and pulled out two pieces of parchment, "I've written all the papers." ”

Harry paused, his tone slowing, "Ron, I might have bad news for you."

Ron chuckled inwardly, "Professor Snape won't come?"

Harry nodded.

"Why!" Ron gripped his paper tightly.

"Polyjuice decoction." Harry spat out the name of a potion they were all familiar with.

Ron swallowed, "So Sirius will come?"

Harry nodded again.

"It's not that I don't believe in Sirius." Hermione was even more entangled, "But can he have a good class?"

"During the Christmas holidays, you can see that in the Forbidden Forest, he is like a fish in water than me." Harry whispered, "Trust him, he's a good wizard on a magical level. ”

With that, they walked to the door of the classroom.

Harry pushed the door open, and they walked in.

"Lupin" was already standing on the podium.

Unlike in the past, he wore a clean but plain lilac robe without any patterns, and his hair was simply groomed, and he combed it hastily, and there were only these changes.

But Ron couldn't take his eyes off it, "Oh my God, Professor Lupin?"

When he sat down, he hurriedly leaned his head over Harry and whispered, "That's Professor Lupin?" Could Sirius have turned into the wrong person, how could he be so handsome. ”

"The look hasn't changed." Harry reminded him.

"It's the temperament that has changed." Hermione followed the reminder.

"Obviously, I just changed my robe." Ron still thought it was incredible.

Harry spread out the book, ignoring Lupin, who winked at him, "Don't you think Sirius is actually handsome?"

Ron subconsciously shook his head.

"Think about it and don't let his mind sway." Harry accentuated his tone.

Ron frowned, trying to turn Sirius into a dog and join himself in bullying Crookshan, rolling in the Forbidden Forest by the centaurs, choking in the Black Lagoon, and being embarrassed by George and Fred's fireworks.

I only remember his appearance and posture.

"Huh?" Ron was surprised, "He's really handsome. ”

"He's Harry's godfather after all." Hermione spoke earnestly.

Harry shook his head, "Godfather and Godson are not related."

Ron's chick pecked at rice and nodded.

Hermione let out an "oh", the roots of her ears reddening slightly.

Not only Ron, but the little witch who entered the classroom couldn't help but look at Lupin several times, Lupin's face was already very good, but he was used to cowering, and in his tattered robes, his face was pale, and it was difficult for anyone to notice his appearance.

Now that he has changed into a new robe, his face has become more or less normal, and he has Sirius's very bluffing temperament

It is not an exaggeration to say that it is earth-shattering.

Hermione's fears didn't come true, Sirius was gifted at teaching, or rather, he didn't treat the class as a task, but played with a group of children like a big kid and taught them how to solve the swamp diggers.

At first, I was able to be patient, according to the textbook, how to distinguish the camouflage of ordinary driftwood and swamp diggers.

Half a lesson passed, and his patience was exhausted.

A very simple method was taught, a "thunderbolt explosion" was taught, and all the driftwood in sight was blown apart to avoid being attacked by swamp diggers.

This is very much recognized by Seamo.

The badgers were a little confused, which was different from Professor Lupin's usual teaching style, but it seemed to be okay?

Wait until the end of the lesson.

"Professor Lupin" packed up his teaching aids earlier than the young wizards and waited for the end of class.

Hermione raised her hand helplessly, "Professor Lupin, you haven't assigned your homework yet."

The little lions glared angrily, but as soon as they looked at it, they didn't have enough courage to look at the "lioness" without mentioning Harry next to them, so they immediately withdrew their gaze again.

"Oh yes, homework." The "Lupin" professor slapped the lectern and suddenly realized.

Hermione and Harry couldn't bear to look at each other.

The familiar feeling is back.

"Well, forget it." He waved his hand, "Compared to boring homework, still"

Harry coughed lightly.

"It's more fun to practice." "Lupin" Professor immediately changed his words, and said, "So, write a paper on how to identify swamp diggers and deal with them properly, instead of solving them with an explosive spell, and hand it in next Monday, three inches." ”

The lion cubs erupted in cheers.

Professor Lupin is really different today, and his thesis is only three inches.

The little badgers were dumbfounded.

A three-inch paper is really good, and it can be written in about half an hour.

Dear Professor Lupin.

Did you teach those things in the classroom?

You've only taught the Explosive Charm to solve these things!

Hermione sighed, "Harry, it looks like we're going to have to prepare a different paper."

She paused and looked at Ron, "You too."

Ron nodded approvingly.

It is foreseeable that when the little lions were writing their papers on the weekend, they had to ask their papers to come out and use them for reference.

Thursday.

When the last Potions lesson of the morning was over, Harry and the others packed up their things and prepared to leave.

Snape dragged out his tone in a gloomy tone, and said, "Mr. Potter, I think you'll have to stay for a while."

The other little wizards sped up their efforts to pack up their things, and some even waved their wands and directly levitated the charm to take everything away, and waited outside the classroom before continuing to clean up.

Hermione and Ron didn't move, standing beside Harry.

"Miss Granger." Snape looked at Hermione, ignoring Ron, "I think I'm making it clear that I just need Mr. Potter to stay. ”

Obviously, this sentence was not said to himself, but Ron still couldn't hold back, shrunk his neck, his feet slipped, and he subconsciously wanted to roll up his schoolbag and go out.

"Harry and I will go to the library later." Hermione made eye contact with him, her tone firm, "I want to stay a little bit. ”

Snape looked away, "Mr. Potter, I'm afraid I'll have to give me an explanation."

"Professor, what explanation do you need?" Harry's tone was cold, "If your eyes are still up to scratch, I'll deliver every assignment on time." ”

"If your brain isn't soaked in alcohol, you know what I'm talking about!" Snape's eyes narrowed, and his tone became dangerous, and he slammed the table, "Blake bought you a lot of potions materials!"

"He's really spoiling you."

"The blood of a unicorn voluntarily donated, the blood and feathers of a thunderbird, the heart of a fiery dragon."

Speaking of this, he paused slightly, gritted his teeth, and spit out some materials: "There is even the venom of the Loba worm and the horn of the fire ash snake egg venom horned beast."

"What do you want to do? Potter!"