Snape

Biodata

Background / History

Snape's school years left him bitter toward Gryffindor students, though his closest friend had been a Gryffindor girl whom he ultimately lost. Seeing Silan and Hermione together repeatedly evokes memories of Lily and intensifies his conflicted response to Harry Potter. 21 72

He developed exceptional skill in Potions and Dark Magic while still a student. Before graduating, he had already revised the recipe for Baruffio's Brain Elixir and invented spells later recorded in his annotated Advanced Potion-Making textbook under the name “Half-Blood Prince.” 191 202 210

Snape grew up as a half-blood with limited financial means and once saved money to buy Lily a birthday gift. Silan's account of spending his earnings on Hermione's birthday present recalls this experience and softens Snape's attitude toward him. 92

His eventual standing as a Potions Master resulted from sustained experimentation as well as talent. While learning, he repeatedly tested potions on himself to understand ingredients, endured numerous cauldron explosions, and sometimes remained awake for days during critical brewing stages. 209

At Hogwarts, Snape serves as Slytherin's Head of House and Potions professor. He repeatedly applies to teach Defense Against the Dark Arts, but Dumbledore rejects him each time, apparently out of concern for Snape's safety. 157

Snape remains primarily devoted to Potions research rather than commercial expansion. With few material needs and no family prestige to maintain, he sells batches of potions when he needs money or accepts commissions as personal favors. Consequently, relatively few potions genuinely made by him reach the market, frustrating Lucius Malfoy's efforts to build a business around his reputation. 372

Although uninterested in maintaining large-scale production himself, Snape later formally authorizes Silan to sell qualifying potions under his name. He regards the arrangement as a way to support his student's research, ambitions, and development rather than a reason to abandon his own scholarly work. 395 396 407

His Wolfsbane Potion research advances from investigating an unexplained improvement to completing a revised procedure, potion trials, and an academic paper. He credits Silan as the paper's second author and personally submits the manuscript to the Extraordinary Society of Potioneers for review. 388 427 430

Appearance

Snape is a thin, imposing wizard whose severe appearance and silent movement lead students to compare him to a bat. 21 71 92

• Long, oily or greasy black hair. 21 92
• Long black robes, often described as spreading like bat wings. 21 71
• Cold, scrutinizing eyes and a habit of using prolonged silence to unsettle students. 53
• Usually keeps his office dark, cold, and crowded with bookshelves, desks, and a well-stocked private ingredient storeroom. 53

During his visit to the Extraordinary Society of Potioneers, Roland Charlemagne uses cleaning potion to wash Snape's greasy hair and criticizes his casual grooming. Snape responds that a Potions Master's appearance has no bearing on brewing ability. 430

Personality

Snape is proud, exacting, and intensely competitive. He considers victory over Lockhart non-negotiable and has little patience for incompetence, grandstanding, or poorly executed magic. 191 206

His classroom manner is severe: he humiliates Harry with difficult questions, sharply criticizes mistakes, and openly favors capable Slytherin students. However, he can recognize genuine talent regardless of House, awarding Hermione points for good work and gradually investing considerable effort in Silan's development. 21 136 286

Despite his harshness, Snape reacts strongly to prejudice. Ron's use of “Mudblood” and assumptions about Snape's views provoke an unusually emotional rebuke and detention rather than agreement. 71 72 246

Snape projects his unrealized hopes concerning Lily onto Silan and Hermione. He explicitly recognizes the parallels between the two pairs: a talented half-blood Slytherin boy and an intelligent, hardworking Muggle-born Gryffindor girl. Their cooperation, gifts, and apparent romantic commitment can prompt unusually generous praise or House-point awards. 22 92 190 373

He often conceals generosity behind dismissive language, presenting valuable ingredients as unwanted “scraps” and fine healing potions as “defective.” His concern also becomes direct when Silan is endangered: he intervenes against Ministry intimidation and instructs Silan to report any troubling behavior from Lupin immediately. 93 265 348

Although classroom accidents and weak students routinely exasperate him, genuine research problems bring out his curiosity. The unexplained improvement in Silan's Wolfsbane Potion absorbs his attention and leads him to clear his workroom for focused investigation. 365 382 383

Snape openly approves of ambition, including the pursuit of glory, wealth, influence, and family standing. He considers these legitimate goals for a young wizard, especially a Slytherin, and scorns established figures who monopolize resources while telling younger wizards not to desire the same advantages. He treats Silan's negotiations with Lucius as practical training in protecting his own interests, while privately resolving to intervene if necessary. 396

His pride in Silan increasingly extends beyond technical achievement to the prospect of training another Potions Master. After reviewing their research notes, he finds Silan's growth even more gratifying than the improved potion itself. He also takes pleasure in colleagues' and examiners' recognition of his student's accomplishments, sometimes attempting to conceal this satisfaction behind deliberately understated praise. 393 427 432

His devotion to research can eclipse ordinary routines: while drafting the Wolfsbane Potion paper, he works amid piles of manuscripts and makes do with a half-eaten sandwich in his office rather than attending dinner. 413

Abilities & Skills

Potions Mastery

Snape is an exceptionally accomplished potioneer whose methods combine technical precision, speed, and original research.

• Revises established recipes, including a more potent but less stable method for brewing Baruffio's Brain Elixir. 191
• Can direct ingredients to slice, grind, and enter a cauldron through wandwork while maintaining precise control over the brew. 222
• Operates four cauldrons simultaneously while preparing Mandrake Revival Potion. 286
• Successfully prepares Fire-Control Potion and provides Silan with detailed practical instruction. 222
• Maintains a private storeroom containing high-quality and valuable ingredients. 53 93
• Brews Wolfsbane Potion and explains its history, purpose, difficulty, and delicate temperature-control requirements to Silan. He specifically warns that wolfsbane is highly poisonous and that unstable heating can cause dangerous splashing. 381
• Assesses a potion through its color and scent, recognizing that Silan's completed Wolfsbane Potion has undergone an unprecedented improvement in quality. 382 383
• Investigates changes to the Wolfsbane Potion's brewing procedure with Silan as his assistant. By Hermione's birthday, he reports that the experiment has succeeded and anticipates significant academic interest once the paper is published. 390
• After failing to reproduce Silan's anomalous final steps, works backward through the problem and rearranges the entire Wolfsbane Potion brewing procedure, recording extensive calculations and a revised brewing diagram. 388
• Completes the improved Wolfsbane Potion's trials and research paper, credits Silan as second author, and submits the manuscript for professional review. Roland Charlemagne praises the work and orders an immediate Review Committee assessment. 427 430

Spell Creation and Counterspells

As the Half-Blood Prince, Snape created advanced spells and their dedicated counters.

• Invented spells including Sectumsempra, which he describes as an advanced form of the Severing Charm. 210
• Created counterspells for his own inventions and privately teaches them to Silan. 210
• Taught Silan Liberacorpus, the counterspell to Levicorpus. 340
• Possesses enough confidence in his creations to present the Half-Blood Prince's methods as superior to “the method of mediocrities.” 191

Snape distinguishes the broad classification of Dark Magic from magic that actually damages the mind. He explains that only especially profound and evil forms have such effects, while Sectumsempra does not. He also identifies the three Unforgivable Curses as prominent examples of spells involving the soul. 210 287

Dueling and Dark Magic

Snape is a highly dangerous combat wizard, particularly proficient in offensive and defensive Dark Magic.

• Casts the Disarming Charm with exceptional precision and speed. 204 208
• Counters Lockhart's Incendio with Aguamenti and defeats him with a rapid Disarming Charm. 204
• Uses Diffindo, Expelliarmus, Stupefy, and Oppugno in rapid succession to incapacitate Lockhart. 246
• Defends himself from Lockhart's poisonous Dark Magic and recognizes its unusual sophistication. 247
• Uses Sectumsempra without hesitation once Lockhart begins using the Killing Curse against students. 247 250
• Blocks Tom Riddle's Killing Curse during the confrontation involving the Basilisk. 254
• Combines a Shield Charm with summoned wind to repel a poisonous magical attack after Silan warns him of Lockhart's ambush. 247
• Casts a protective Shield Charm on Silan when he believes Lockhart is about to target him. 248
• Breaks Lockhart's Shield Charm with a full-force Sectumsempra, although Lockhart uses the brief delay to evade most of the attack. 250
• Attempts to conjure a rooster against the Basilisk, but Lockhart repeatedly interrupts him. 250
• Demonstrates fine control over Sectumsempra by cutting Walton's robes and only lightly marking his skin during the Ministry confrontation. 265

Teaching and Mentorship

Snape's teaching is harsh but practical, emphasizing repetition, precision, and immediate correction.

• Gives Silan private Potions lessons and guides him through Hemostatic Healing Potion and Baruffio's Brain Elixir brewing. 173 191
• Trains Harry, Malfoy, and Silan for a dueling match, beginning with the Disarming Charm and correcting their form directly. 208
• Privately teaches Silan the counterspells to the Half-Blood Prince's spells after learning Silan has already mastered the originals. 210
• Teaches Silan Liberacorpus, enabling him to counter Sirius Black's wandless Levicorpus. 340
• Takes visible pride in Silan's ability, compares him to himself, and offers to nominate him for a Special Contribution to the School Award. 286
• Breaks private lessons into detailed theory and practical steps, extending instruction to related potions so that Silan can apply principles beyond the immediate recipe. 173
• Teaches Silan that establishing a personal ingredient storeroom is essential to becoming a Potions Master, emphasizing the collection of primary ingredients over more readily available supplementary materials. 375
• Selects Silan to assist with Wolfsbane Potion despite its greater difficulty than Mandrake Revival Potion, citing his previous successful assistance. 378
• Guides Silan through Wolfsbane Potion preparation and brewing; this instruction raises and ultimately levels up Silan's Potion Prodigy trait. 381
• Praises Silan's care, caution, composure, and Potions talent to Hermione while explaining why he chose him as a research assistant. 390
• Initially establishes Silan's private lessons on a weekly basis, presenting Potions as a source of income for alchemical materials while privately hoping to draw him away from alchemy. 169
• Uses Wolfsbane Potion as a bridge toward advanced instruction, combining demanding practical work with reinforcement of Silan's fundamentals. 381
• Supports Silan's commercial negotiations as an exercise in judgment and self-advocacy, then reminds him that fulfilling potion orders also provides valuable technical practice. 396 407
• Supervises Silan's attempt to brew Hemostatic Healing Potion in three cauldrons simultaneously, warning him of the danger and remaining ready to intervene with his wand. 413
• Arranges to take Silan to the Extraordinary Society of Potioneers for professional registration and accompanies him during his certification examination. 427 430 432
• Establishes a Potions Club with Dumbledore's approval to provide Silan and Hermione with funded research opportunities, personally distributing their first grants. 440

Power Progression

Equipment / Items

• Wand — used for precise potion work, combat magic, and Transfiguration. 204 222
• Half-Blood Prince's annotated Advanced Potion-Making textbook — Snape passes the battered book to Silan while falsely attributing it to a “friend.” 174
• Private potion storeroom — holds premium ingredients, including aconite powder, Angelica, Moonstone Powder, Billywig stingers, and Tonguefire Grass seeds. 93 191
• Felix Felicis — secretly gives Silan a vial as purported payment and a precaution regarding the Basilisk. 287
• Basilisk-remains box — used with Dumbledore to convince Minister Fudge that the Basilisk has been destroyed. 266
• Self-Stirring Cauldron — Christmas gift from Silan; Snape later uses it to brew Fire-Control Potion. 92 222
• Alchemical storage cabinets — regulate temperature, humidity, ventilation, lighting, and other conditions to preserve potion ingredients. His storeroom is enlarged with an Undetectable Extension Charm and contains cabinets reaching to the ceiling. 375
• Advanced Healing Potions — provides several bottles to Silan alongside valuable ingredients, describing them as defective potions to be disposed of. 348
• Silver dagger — an ingredient-cutting tool; handling its cool surface also helps calm him before class. 72 365
• Potion-sale authorization letter — writes and seals a letter allowing Silan to sell potions as Snape's work, formally backing the arrangement with his reputation. 396
• Improved Wolfsbane Potion manuscript — records his research with Silan and the completed trials; submitted to the Extraordinary Society of Potioneers for review. 427 430
• Cleaning potion — given to him by Roland Charlemagne after Charlemagne washes his hair during their meeting. 430

Relationships

• Albus Dumbledore — colleague and covert ally. Snape assists Dumbledore during the confrontation with Quirrell and cooperates in deceiving Fudge about the Basilisk's fate; he also resents Dumbledore's repeated refusal to appoint him Defense Against the Dark Arts professor. Dumbledore later arranges ingredient supplies for the Wolfsbane Potion work and expresses confidence that Snape's involvement will safeguard Lupin and the students. Snape nevertheless disapproves of Dumbledore's method of placing Harry in danger to temper him and later accuses him of favoring Lupin's circle while using others. The two subsequently cooperate in establishing a funded Potions Club to encourage Silan and Hermione to remain at Hogwarts. 119 122 157 266 378 381 397 440
• Silan Prewett — student and increasingly favored protégé. Snape challenges Silan early, later gives him valuable ingredients, private instruction, advanced counterspells, Felix Felicis, and public recognition. Silan later identifies Liberacorpus as a spell Snape personally taught him. Snape also defends him against Ministry intimidation, teaches him to establish his own ingredient storeroom, and selects him as an assistant for successful Wolfsbane Potion research. Their connection develops into explicit professional support: Snape authorizes sales under his name, praises Silan's handling of Lucius, credits him as the paper's second author, and takes him for Potioneer certification. He increasingly regards training Silan into a Potions Master as a personal achievement. 21 93 173 210 265 286 287 340 375 390 393 396 407 427 430
• Harry Potter — strained student-teacher relationship shaped by Snape's grief and hatred connected to Lily and James. Snape regularly berates Harry, yet still recruits him for the dueling team and orders him to evacuate during Lockhart's attack. Harry's green eyes remind Snape of Lily, while his resemblance to James and weak Potions performance aggravate Snape's hostility. 21 72 208 248 373
• Hermione Granger — capable student whom Snape acknowledges with House points; he also reassures her when she fears for Silan after the Great Hall battle. He sees strong parallels between Hermione and Lily, regrets that she does not receive an award alongside Silan, and reacts happily to her matching ring with Silan. When she visits his office worried about detention, he explains that Silan is assisting with research and praises his abilities to her. He later welcomes her to a joint brewing session, asks whether Harry has been bothering her and what she thinks of Silan, and enrolls her alongside Silan in the Potions Club with an equal initial research grant. 22 136 256 309 373 390 413 440
• Gilderoy Lockhart — professional rival Snape considers an empty, fraudulent fool. Their hostility escalates from a dueling demonstration to a lethal confrontation after Lockhart attacks students. 204 206 246 247
• Sirius Black — Sirius becomes suspicious of Snape's connection to Silan after Silan counters his wandless Levicorpus with Liberacorpus and states that Snape taught him the countercurse. Silan also associates Snape's hatred of Lupin with the school-era incident in which Sirius lured Snape toward the transformed werewolf at the Shrieking Shack. 340 348
• Lily — Snape's lost Gryffindor friend. Silan and Hermione's closeness reminds him of his past with her. He regrets the words that destroyed their relationship and projects the possibility of a happier outcome onto the younger pair. 21 22 72
• Remus Lupin — colleague whom Snape openly distrusts and hates. He privately reveals Lupin's werewolf identity to Silan, warns him and Hermione to be careful, and disparages Lupin's kindly manner as deceptive. Despite this hostility, he undertakes Wolfsbane Potion brewing and research during Lupin's appointment. He later uses a potion delivery to boast about Silan's ability and disparage Lupin's schoolboy behavior. While occupied with his paper, he delegates daily delivery of six portions to Silan and insists that Silan watch Lupin finish each dose. He deliberately withholds the improved potion but neither tampers with the original nor worsens its already unpleasant taste. 347 348 374 375 378 381 390 396 397
• Draco Malfoy — favored Slytherin student and member of Snape's dueling team. Snape praises his classroom work and later orders Ron to prepare ingredients for him when Draco claims his injury prevents him from doing so. 21 136 208 373
• Lucius Malfoy — correspondent who requests extra attention for Draco and hopes to enter the potions business using Snape's reputation. Snape's lack of interest in sustained commercial production frustrates these ambitions. Snape later supports Silan's proposed partnership with Lucius while warning that Lucius is difficult to negotiate with. He approves when Silan successfully protects his interests and subsequently accepts an invitation to a potions sale at Malfoy Manor to give Silan access to prominent wizards. 365 372 396 407 440
• Neville Longbottom — student intimidated by Snape's harsh criticism. Neville's Boggart assumes Snape's appearance, and Lupin teaches him to dress it in his grandmother's clothes. 22 373 375
• Minerva McGonagall — senior colleague and former teacher. Snape respects her authority in faculty affairs and is reluctant to act recklessly in her presence. He later tells her about Silan's role in the improved Wolfsbane Potion research and his plans for professional registration, taking evident pride in her surprise and admiration. 58 137 427
• Madam Pomfrey — colleague who assists with the Mandrake Revival Potion. Snape persuades her to accept Silan as an assistant, and her observation that teacher and student resemble one another visibly delights him. 284 285 286
• Roland Charlemagne — president of the Extraordinary Society of Potioneers. Snape describes him as rigorous and meticulous. Charlemagne admires Snape's rigorous yet bold research but criticizes his grooming and personally cleans his hair; Snape tolerates the intervention while disputing its relevance to Potions. Charlemagne praises his improved Wolfsbane Potion manuscript and orders an urgent review. 430

Story Role / Major Arcs

First-Year Potions and the Philosopher's Stone

Snape begins the year by establishing an intimidating Potions classroom, targeting Harry with advanced questions while challenging Silan to demonstrate his alleged prodigy status under reduced ingredients. 21

After Neville's brewing accident destroys their first batch, Silan and Hermione successfully prepare a perfect Boil Potion with their remaining ingredients. Snape initially calls it barely passable and awards one point each, then grants five additional points apiece after their cooperation reminds him of himself and Lily. 22

Following a confrontation over Silan's map business and injured classmates, Silan invokes Nott's insult against Hermione and provokes Snape's painful memories. Snape initially assigns half a month of detention, subsequently extending it to three weeks and finding increasingly petty grounds for criticism. 53 56

Snape later attempts to recruit Silan to Slytherin's Quidditch team specifically to defeat Harry, whose appointment as Gryffindor Seeker infuriates him. Silan refuses, preferring Potions, and offers Dittany leaves, which Snape keeps despite his dismissive response. 59

He is injured while dealing with Fluffy but recovers using Dittany leaves Silan gave him. During the Philosopher's Stone crisis, he joins Dumbledore in monitoring Harry and Quirrell, then escorts the injured Quirrell to St. Mungo's after Dumbledore defeats him. 64 119 122

While watching the confrontation, Snape remains tense and grips his wand, disapproving of Dumbledore's decision to expose Harry to danger as a means of developing him. Silan's unexpected arrival on Norbert surprises both professors. 119 120

Christmas Gift and Developing Favoritism

After summoning Silan to his office, Snape disguises a gift of high-quality potion ingredients as “scraps” to be discarded. He stiffly returns Silan's Christmas greeting, astonishing the students waiting outside. 93

This generosity follows Silan's presentation of a Self-Stirring Cauldron and explanation that saving for Hermione's birthday gift had delayed his Christmas present. The story recalls Snape's own efforts to buy Lily a birthday gift and leaves him visibly overwhelmed. 92

At the beginning of Silan's second year, Snape gives him the key to his office while catching Harry and Ron after their flying-car arrival. He subsequently holds Silan up as a model Slytherin student and awards him ten points for following school rules, prompting Silan to suspect that Snape is treating him as a stand-in for his younger self. 167

Private Lessons and the Half-Blood Prince

During Silan's second year, Snape begins private Potions instruction. He teaches specialized brewing methods, gives Silan the Half-Blood Prince's annotated textbook, and challenges him to prove his worth as a Slytherin. 173 174 191

The offer originates partly in Snape's concern that Nicolas Flamel's alchemy instruction will divert Silan from Potions. He proposes personally teaching Silan once a week, arguing that potion sales can finance expensive alchemical materials while privately hoping that Silan will come to prefer Potions. 157 169

Snape later discovers that Silan has learned every spell in the textbook within days. Impressed, he teaches the corresponding counterspells and discusses Dark Magic as an artificial classification rather than inherently corrupting magic. 210

His instruction and reputation also underpin Silan's potion-selling venture. Fred and George obtain a higher price for Silan's Hemostatic Healing Potions by attributing them to Snape, and Pippin later proposes selling Silan's work under Snape's name. Silan limits his initial production to potions he can brew at comparable quality. Snape's knowledge of or consent to the initial arrangement is not established at that stage; he later reveals that he already knows about the sales and formally authorizes the venture. 197 278 306 395 396

Dueling Club Rivalry

Lockhart's unexpected ability to block Snape's opening Disarming Charm humiliates Snape during a public demonstration. Determined to secure “absolute victory,” Snape recruits Silan, Harry, and Malfoy for his team and personally trains them. 204 206 208

After Silan's performance helps establish Snape's superiority over Lockhart, students credit Snape's teaching for Silan's formidable magic. 219

Snape prevents Lockhart from leaving before the result and presses him to acknowledge the victory. The winning Chimera Team is publicly announced as coached by Snape, turning Silan's success into a direct humiliation for his rival. 219

Lockhart's Attack and the Basilisk Crisis

When Lockhart, possessed by Tom Riddle, attacks Hogwarts students with Dark Magic, Snape assumes command of the evacuation and duels him while protecting the students. He identifies the danger of Lockhart's magic, survives the Killing Curse, and uses Sectumsempra in response. 247 248

Snape continues fighting Lockhart while Silan and the other professors address the Basilisk. Afterward, he searches Lockhart's office for Dark artifacts and participates in Dumbledore's deception of the Ministry, presenting false Basilisk remains to Fudge. 250 256 266

During the battle, Snape notices that Lockhart's power fluctuates and exploits a weaker interval to launch a full-force attack. He also attempts to conjure a rooster to counter the Basilisk, but Lockhart prevents him from completing the effort. When Silan leaves the professors' protection and approaches the creature, Snape urgently orders him to return. 250

When Ministry officials detain and intimidate Silan over the Basilisk investigation, Snape joins Dumbledore in confronting them. After Fudge dismisses threats involving Veritaserum and Walton's axe as a joke, Snape retaliates with a controlled Sectumsempra, cutting Walton's robes and lightly marking his skin. Dumbledore and the other professors minimize the incident, forcing Fudge to drop the matter. 263 265

Mandrake Revival Potion and Soul-Magic Inquiry

Snape enlists Silan as an assistant for the Mandrake Revival Potion, trusting him to perform a delicate sealing procedure usually reserved for experienced potioneers. He awards Slytherin seventy points for the work and openly takes pride in Silan's ability. 284 286

When Silan asks about soul-strengthening potions in relation to the Basilisk's gaze, Snape warns him against pursuing dangers beyond his control but secretly provides Felix Felicis as protection. 287

At the subsequent faculty meeting, Snape ensures that Silan's assistance is acknowledged alongside the professors' contributions to treating the petrified students. Silan receives the Special Contribution to the School Award at the end-of-year feast, while Snape privately regrets that Hermione does not receive one alongside him. 290 309

Third-Year Connection to Sirius Black

During Silan's confrontation with Sirius Black in Diagon Alley, Sirius uses wandless Levicorpus in an attempt to escape. Silan immediately counters it with Liberacorpus and identifies Snape as his instructor, causing Sirius to question Snape's role in Silan's life and motives concerning Harry. 340

At the third-year start-of-term feast, Snape reacts with visible hatred to Lupin's appointment. He later questions Silan about the Dementor attack and learns that Silan and Hermione cast Patronus Charms using happy summer memories. Snape then privately warns Silan that Lupin is a werewolf, tells him to alert Hermione, and instructs him to report suspicious behavior immediately. Before dismissing him, he supplies valuable ingredients and Advanced Healing Potions under the pretense of disposing of scraps and defective stock. 347 348

During a Shrinking Solution lesson, Snape notices the matching unicorn-horn rings worn by Silan and Hermione. After recognizing their romantic significance and mistletoe pattern, he becomes unusually pleased and awards ten points each to Slytherin and Gryffindor. 373

Personal Storeroom and Wolfsbane Potion Research

Snape shows Silan the expanded interior of his private storeroom and its specialized alchemical cabinets, explaining that an accomplished Potions Master must build a personal collection of primary ingredients. Silan subsequently begins establishing his own stock with high-quality ingredients supplied by Dumbledore, temporarily placing the most storage-sensitive materials in Snape's cabinet. 375 381

Despite his hostility toward Lupin, Snape undertakes Wolfsbane Potion work and persuades Dumbledore that Silan is a suitable assistant. He cites Silan's contribution to the previous year's Mandrake Revival Potion and supplies an ingredients list for the work. 378

Snape then gives Silan detailed one-on-one instruction in Wolfsbane Potion brewing. After completing his own batch, he allows Silan to attempt the difficult potion despite warning him of its dangers. Silan's newly upgraded Potion Prodigy trait causes the completed brew to improve unexpectedly, an anomaly Snape immediately detects through its color and scent. 381 382 383

Unaware of the trait responsible, Snape investigates possible explanations involving the cauldron, ingredients, and brewing procedure. His interest becomes intense enough that he clears the workroom for research, believing that a major discovery may be imminent. 383

When attempts to reproduce Silan's final steps fail, Snape works backward and rearranges the entire brewing procedure. He covers a transfigured blackboard with calculations and a procedural diagram, demonstrating that the unexplained result has prompted a genuine research breakthrough rather than merely an attempt to duplicate Silan's actions. 388

By September nineteenth, Silan is assisting Snape in testing an improved Wolfsbane Potion procedure. When Hermione arrives fearing that Silan is serving detention, Snape invites her inside and explains the experiment. He reports a resounding success, predicts that publication will attract academic attention, and warmly praises Silan's talent and temperament before sending the pair away while he continues the remaining work. 390

After completing another review of their records, Snape judges that the material is sufficient for a Potions paper. Silan's detailed annotations particularly please him, and he anticipates distinction both as the researcher behind the improvement and as the teacher of a future Potions Master. 393

During the subsequent brewing schedule, Snape has Silan help prepare a cauldron of ordinary Wolfsbane Potion for Lupin. He admits wanting Lupin to drink it more often despite its dreadful taste, then uses their visit to Lupin's office to emphasize how much of the work Silan performed. While concentrating on his paper, he divides the batch into six portions and instructs Silan to deliver them daily and watch Lupin drink each one, fulfilling his commitment to Dumbledore without altering the potion to harm or further discomfort Lupin. 396 397

At a later feast, Snape tells the other professors that the paper and trials are complete and that only submission to the Extraordinary Society of Potioneers remains. He acknowledges Silan's substantial contribution, identifies him as the second author, and announces plans to take him along for Potioneer registration. 427

Snape subsequently brings Silan and the improved Wolfsbane Potion manuscript to the Society. Its president, Roland Charlemagne, praises the paper and sends it to the Review Committee for immediate assessment. Snape's appearance also draws Charlemagne's attention, resulting in an unsolicited hair cleaning before their professional discussion. Publication or final acceptance of the manuscript is not yet confirmed. 430

Commercial Authorization and Professional Mentorship

Silan eventually approaches Snape about the potions he and Pippin have been selling under Snape's name. Snape reveals that he already knows and has no objection to Silan earning money through Potions, recognizing the substantial investment the subject requires. He then asks Silan to explain his assessment of Lucius and the proposed business partnership. 395

Snape approves when Silan describes the venture not merely as a source of income, but as a way to fund research, gain influence in the wizarding world, and restore the Prewett family's standing. He writes and seals an authorization letter acknowledging the potions as his work, effectively lending Silan his professional reputation while requiring that their quality be maintained. He warns that Lucius is difficult to deal with and leaves Silan to negotiate, privately intending to protect him if the arrangement goes wrong. 396

The authorization gives Silan independent leverage when Lucius attempts to claim that only his friendship with Snape can legitimize their sales. After the negotiations, Snape praises Silan's judgment and consideration for his teacher's interests, while reminding him that fulfilling commercial orders should also be treated as serious technical practice. 403 407

Snape later invites Silan and Hermione to brew together in his workroom, pleased by the prospect of watching a pair he associates with himself and Lily. During their visit, his friendly questions about Hermione's opinion of Silan make the meeting unusually personal. When Silan begins operating three cauldrons at once, Snape warns him of the risks but allows the attempt under close supervision. 412 413

His professional support extends to accompanying Silan for Potioneer certification. During the examination, the examiners' admiration for Silan's flexible brewing and control gratifies Snape, who privately attributes his student's achievement to the combination of exceptional gifts and sustained diligence. 430 432

Founding the Potions Club

After receiving Lucius's invitation to a potions sale at Malfoy Manor, Snape accepts with the intention of giving Silan opportunities to meet prominent wizards. Meanwhile, Dumbledore seeks ways to keep Silan's exceptional abilities connected to Hogwarts through legitimate opportunities and honors. 440

Snape proposes financial support for Silan's research, arguing that training a Potions Master requires substantially more funding than the existing education fund provides. When Dumbledore raises the issue of appearing fair to other students and parents, Snape initially argues that anyone capable of brewing improved Wolfsbane Potion in third year should qualify, then recognizes the need for a publicly defensible arrangement. 440

The resulting Potions Club receives Dumbledore's approval for an annual grant of twelve thousand Galleons, which Dumbledore expects the Board of Governors to finance. Snape enrolls Silan and Hermione and gives each five hundred Galleons as the first month's grant. When Silan asks whether there are any other members, Snape states that the two of them fill the club, reinforcing Silan's suspicion that it was created specifically for them. 440

Notable Quotes

“I only want absolute victory.” 206

“Dark Magic is not a magical concept, but an artificial classification.” 210

“With me here, failure is impossible.” 284

“He is my student, after all.” 286

“An accomplished Potions Master should learn to establish his own potion storeroom and collect every primary ingredient he might need.” 375

“To be frank, this experiment has already been a resounding success. Once the paper is published, it will likely cause quite a stir in academic circles.” 390

“You said just now that a teacher's business is his student's business. Then when a student has business to attend to, naturally it is his teacher's business as well.” 396

“I do not believe any Potions Master brews potions with his appearance.” 430

Trivia

• Snape refuses to acknowledge that the Half-Blood Prince's textbook is his, repeatedly calling its owner his “friend.” 174 191
• Students commonly compare him to a bat because of his black robes, greasy hair, silent movement, and gloomy demeanor. 21 71 92
• Snape's reputation is valuable enough that George and Fred use his name to raise the selling price of Silan's Hemostatic Healing Potions. 198
• Sirius Black's discovery that Snape taught Silan Liberacorpus leads him to become suspicious of the nature of their connection. 340
• Snape uses the Self-Stirring Cauldron Silan gives him for Christmas, despite his outwardly dismissive manner toward gifts. 92 222
• His supposed “scraps” and “defective potions” given to Silan at the beginning of third year are valuable enough that Silan estimates their resale value at two or three hundred Galleons. 348
• Neville's Boggart takes Snape's form, which Lupin has Neville dress in his grandmother's clothes. 375
• Pippin privately considers the resemblance between Silan's potion-making and Snape's so striking that, were Silan not a Prewett, he would suspect him of being Snape's illegitimate son. This is Pippin's speculation, not an established familial relationship. 383
• Hermione finds Snape's extended praise of Silan during the research explanation almost unrecognizable compared with his usual insults toward students. 390
• Snape appears to have prepared a new, soft red leather chair especially for Silan, conspicuously different from his office's older furniture. 348
• While showing off Silan's brewing to Lupin, Snape changes his form of address from “Prewett” to “Silan” because the surname seems insufficiently familiar. 397
• Roland Charlemagne not only washes Snape's hair but also smooths a wrinkle in his robes, largely ignoring Snape's objection that appearance is irrelevant to his work. 430
• The Potions Club initially has only Silan and Hermione as members, with equal monthly grants of five hundred Galleons each. 440

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