Witcher at Hogwarts

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While teaching, Ethan's magical prowess also experienced rapid improvement. Successfully securing access to a magical spell training room, Ethan spent the night mastering offensive spells. However, he found these spells somewhat disappointing, especially those like the Densaugeo, and Tarantallegra designed for pranks.

Even the spells intended for combat, such as the disarming charm appeared unimpressive in Ethan's eyes. Most of these spells could only temporarily incapacitate opponents without causing significant harm. Nevertheless, these spells represented the extent of attack magic that most Hogwarts students could learn.

Although Ethan encountered more destructive spells like Confringo, Incarcerous, and Fiendfyre, they occupied only a small section in the thick spell book.

Reflecting on the magical abilities displayed by witches and wizards in the world before Ethan's time, he realized that if they were limited to this level of magic, they would have been easily defeated by mortals. In that world, witches could directly summon meteorites, thunderstorms, and other large-scale spells.

Certainly, powerful spells existed in Ethan's world, such as the Fire magic that emitted magical flames capable of consuming everything, and only an anti-spell could extinguish it. Theoretically, if left unchecked, the fire could burn from Brazil to Canada. However, these potent spells were labeled as black magic and relegated to the forbidden section, gradually fading from memory—a retrogression that Ethan found shameful.

Feeling a duty to preserve these almost-forgotten black magics, Ethan used his position as a professor to access the forbidden area of the Hogwarts library.

Entering the library, Ethan marveled at the heritage of Hogwarts, a thousand-year-old institution. The ordinary book area boasted towering shelves and abundant magical books, but even the forbidden books area was filled with a diverse collection. Some books were covered in spiderwebs and thick dust. As Ethan approached certain books, his wolf school badge would vibrate slightly, indicating magical or cursed content. Ethan avoided touching books with magical reactions, knowing the power of the resurrection stone ring's curse that even Dumbledore couldn't resist. He refrained from engaging with unknown curses.

One black-covered book, with a cover that felt like human skin, captured Ethan's attention. Retrieving it from the shelf, he discovered a flat man's face on the cover attempting to escape the book, its mouth wide open in an apparent attempt to scream.

Without hesitation, Ethan punched the book, silencing the scream that was about to escape the man's mouth. Smirking contemptuously, he placed the troublesome book back on the shelf.

It didn't take long for Ethan to locate the book he needed: a large and hefty tome titled "Advanced Black Magic Annotations and Research." Contentedly, Ethan returned to his professor's office with the book in hand.

As he perused the pages of "Advanced Black Magic Annotations and Research," Ethan was astonished. The magic detailed in this book completely shattered Ethan's prior misconceptions about what he believed to be offensive spells.

Drowning Curse: Fill the opponent's lungs with water, causing intense pain. If the magical power is potent enough, it can even drown the opponent outright.

Engaging in further creative thinking, the book proposed altering the incantation meant to cure a patient's constipation to one that could directly extract the opponent's internal organs.

A myriad of mind-expanding and potent spells left Ethan in awe of the dark wizards in this world. He also found himself longing to explore Snape's original spell, Sectumsempra. Ethan considered paying a visit to the potions classroom.

With his decision made, Ethan planned to go to Snape's office, situated in the basement. Standing at the door, Ethan sensed the temperature drop and an overall gloomy atmosphere. He couldn't help but feel sympathy for the Slytherin students, whose lounge was beneath the Black Lake. Ethan sincerely wished them a life free from arthritis and rheumatism.

Ethan knocked on Snape's office door, receiving no immediate response. After waiting for a while, he knocked again. Still met with silence, Ethan began to think Snape was absent. Just as he contemplated leaving, a slightly indifferent voice from behind the door uttered, "Please come in."

Snape's office was dimly lit, with a few bubbling cauldrons serving as the primary light source to prevent the room from plunging into complete darkness. Large glass jars adorned the shelves along the wall, containing unsettling contents. Ethan peered inside, discovering various animal tissues and even a dissected toad on a small table against the wall.

Suddenly, Snape emerged from the shadows, dressed in a black robe. His greasy black hair framed his sallow and thin face, casting a gloomy aura under the light. Snape appeared slightly puzzled by Ethan's unexpected visit.

"Professor Snape, I'd like to invite you to study the potion I brought from another world together," Ethan said with enthusiasm, presenting a notebook from his pocket containing years of witcher pharmacy formulas and experiences.

Frowning, Snape accepted the booklet and perused its contents casually. However, his initial indifference gave way to a serious demeanor as he delved into the contents. Recognizing the value of the notebook as a potion master, Snape became genuinely intrigued. He was particularly fascinated by the Black Blood potion designed to combat vampires, the vitality-boosting White Raffard's Decoction, the Golden Oriole resembling the magical elixir, the Cat potion for night vision, and the Ketcho for underwater breathing.

Snape began questioning Ethan about potion-making knowledge. When he learned that these potions were only suitable for consumption by Witchers due to their high toxicity, Ethan detected a hint of sarcasm in Snape's eyes.

Despite the absence of herbs from the original world in this one, Snape, as a potion master, cherished the ideas behind these potions. Medicinal ingredients could always be substituted. Yet, even Snape was taken aback when Ethan produced a considerable amount of otherworldly biomaterials and herbs from his bag.

After expressing gratitude for the materials, Snape extended an invitation, "You can come to my office every Monday afternoon for potion research."

With that, Snape turned his attention to studying the Water Ghost brain that Ethan had brought. Judging from the specimens in the bottles, Snape held a particular interest in biological materials. Ethan silently exited Snape's office, closed the door, and left ample space for Snape to continue his studies.

Subsequently, Ethan shared the otherworld herbal seeds he had collected with Professor Sprout, who also taught herbology. Intrigued by the unique herbs, they eagerly provided information on planting methods and growing environments. In return, Ethan received a generous package of herbs with therapeutic effects.