Chapter Summaries

Vizet explained how Musical Resonance could create a soul imprint for alchemical armor, drawing a comparison to Magical Portraits. Fred and George then persuaded Neville and Hanna to help retrieve a Stone Pier Giant for study, while Vizet and Luna watched them set off.

• Vizet connected Rowena Ravenclaw's Musical Resonance method to the way Magical Portraits used a soul's memories to capture a model's imprint.
• Neville, Fred, and George discussed bringing back a Stone Pier Giant and taking it apart to study its construction.
• Fred and George proposed using Neville and Hanna's mobile Christmas Cactus to move the giant and avoid leaving magical traces.
• Hanna agreed to help Neville, while Luna offered to help by recording spells with Vizet.
• Fred and George left with the others, and Vizet and Luna joked that the twins would have found another way to send Neville and Hanna adventuring.

Neville and the others opened the Stone Pier Giant and examined the alchemical structure inside, including the preserved Bandimang and a strange humanoid device. Vizet compared the device’s raised sections to a music box and began explaining how melodies could represent the soul’s expressions.

• Neville said the Stone Pier Giant felt lighter than he expected, and Fred and George confirmed that they could make it sway when they tried to lift it.
• Vizet used the spell Dissendium in a groove, causing the Stone Pier Giant to open and reveal its internal structure.
• Fred and George examined the humanoid device at the Giant’s center, and Vizet connected it to ideas about Sympathetic Magic and Alchemy.
• Vizet conjured and disassembled a music box to show how its mechanisms produced melodies, prompting Fred and George to recall a lullaby their mother had sung.
• Neville connected memories to the Memory Ball, and Vizet explained that the device’s raised sections could represent notes and fluctuations in the soul’s melody.

Vizet used a music box to explain how the Stone Pier Giant’s mechanisms recorded a soul and made it move, helping Neville and Hanna understand the Alchemy involved. Fred and George proposed that the M members build their own Stone Pier Giant together before returning the borrowed one.

• George and Fred realized the Stone Pier Giant’s central device resembled a gramophone and connected it to Vizet’s explanation of music boxes.
• Vizet showed Neville and Hanna the music box’s Sound Cylinder and explained how it represented a way to record music and a soul.
• Neville wound the music box and watched its spring, gears, Sound Cylinder, and Metal Reed work together to produce music.
• Fred and George suggested building a Stone Pier Giant, and Neville became eager to make one to protect his family.
• Fred and George proposed that the M members contribute their skills, asking Neville and Hanna to help with Herbology and naming Vizet and Luna the Technical Consultants.

Vizet explained how the M.S.C. members would work together to create a Stone Pier Giant while their research advanced his potion studies. He showed Snape his draft formula for the second part of Wolfsbane Potion, which drew on African Wizards’ Voodoo Dolls as well as Animagus research.

• Fred and George assigned themselves to Alchemy research, Neville and Hanna to Herbology, and Vizet and Luna to technical consulting.
• Vizet reflected on how the group’s work let each member develop their magical talents and give them a chance to advance by creating a Stone Pier Giant.
• The group studied the founders’ Alchemy Puppet methods, and Vizet adapted ideas from the research to build a framework for his potion formula.
• Snape asked Vizet about his poison research, and Vizet revealed that he was developing the second part of Wolfsbane Potion.
• Snape inspected Vizet’s draft formula, and Vizet explained that its initial inspiration came from Malo Fufang’s notes but that it relied more on African Wizards’ Voodoo Dolls than on Animagus principles.

Vizet explained to Snape how the Wolfsbane Potion might affect the soul and drew on Animagus transformation and Bloodline Magic to propose a model of lycanthropy. He left the explanation unfinished as he described how the full moon would affect the curse.

• Vizet connected the Wolfsbane Potion’s brief pain and accelerated heartbeat to Animagus transformation and its double heartbeat.
• Vizet explained to Snape that an Animagus’s animal heart could be understood as an intangible aspect of the soul that influenced the wizard.
• Vizet proposed that the Wolfsbane Potion injured the soul to form a protective “Soul Atrium,” rather than constructing a second heart.
• Vizet transformed his Wand into a human model and showed a mottled heart representing the soul afflicted by the Lycanthropy Disease curse.
• Vizet explained that the soul could heal around the curse on ordinary days, then began describing how the full moon would affect it.

Vizet explained his theory of how Wolfsbane Potion protected a werewolf’s spirit from the effects of Lycanthropy Disease, and he and Professor Snape worked together to revise the potion formula. They left the formula with several changes agreed upon, while continuing to examine other ingredients.

• Vizet explained that Wolfsbane Potion guided a werewolf’s spirit into a familiar Soul Atrium, keeping it safe while the curse changed the body during the full moon.
• Professor Snape concluded that the potion had to be taken before the full moon affected the soul, so the spirit would recognize and enter the Soul Atrium.
• Vizet and Professor Snape identified Henbane and Ground Ivy as ingredients used to simulate the full moon, then agreed to remove Moonstone Powder and Moonpetal Flower Infusion.
• Vizet proposed using Bay Leaf with Ground Ivy to simulate the full moon, and Professor Snape checked several books before approving the idea.
• Vizet suggested replacing Venomous Tentacula juice with Witch Hazel, and Professor Snape agreed and modified the notebook.

Vizet and Snape established how Lycanthropy Disease affected a wizard’s soul and used that understanding to revise the Wolfsbane Potion formula. Their experiments revealed a bottleneck, leaving Vizet to review the formula before their research could continue.

• Vizet concluded that Lycanthropy Disease was a bloodline curse that contaminated the soul and transformed a wizard’s spirit and body into those of a werewolf.
• Vizet theorized that the Wolfsbane Potion created a Soul Atrium to shelter the spirit from the curse while suppressing the body’s activity.
• Snape reviewed Vizet’s experimental notes, rejected several ingredients, and agreed to use Wolf’s Bane Monkshood and Betony after Vizet explained Betony’s role as a bridge between potion stages.
• Snape warned Vizet that Agarwood was not as widespread as North American wizards claimed and recommended Black Walnut Shell as a better substitute.
• Vizet and Snape brewed and assessed potions late into the night, then stopped after reaching a bottleneck and agreed Vizet would reconsider the formula.

Vizet returned to his hidden laboratory to resume researching werewolves as the full moon approached, using the captive Fenrir Greyback as his subject. He restrained Greyback and prepared to observe his transformation, while Greyback realized Vizet had uncovered his hidden memories.

• Vizet returned to the Forbidden Forest and revealed the temporary laboratory he had built to study Fenrir Greyback.
• Vizet greeted the shackled Greyback and magically forced down the object Greyback tried to spit at him.
• Vizet explained that the approaching full moon meant he needed to observe Greyback turning into a werewolf.
• Greyback called Vizet crazier than the Death Eaters and Voldemort, while recalling that Vizet had breached his mental protections and accessed his memories.

Vizet forced Fenrir Greyback to drink an unfinished Wolfsbane Potion, then used the Night Vision Charm as he cut open Greyback’s chest to study his unusual body. Greyback tried to provoke Vizet and warn him about Dumbledore, but Vizet turned the accusation back on him by asking him to remember how he had tormented ordinary people.

• Vizet forced Fenrir Greyback to drink the unfinished Wolfsbane Potion despite his resistance.
• Vizet cast the Night Vision Charm on Greyback, who felt a pounding heartbeat rather than clearer vision.
• Vizet used the Cutting Curse to open Greyback’s chest, while his blood floated into a nearby sphere.
• Greyback accused Vizet of being an executioner and tried to make him fear Dumbledore’s judgment.
• Vizet told Greyback that his magic-resistant skin required cutting and reminded him of how he had tormented ordinary people.

Vizet tortured Fenrir Greyback to provoke and observe the changes Wolfsbane Potion caused in his heart and soul. He found a werewolf-shaped soul atrium and a mark-like Thread in Greyback’s heart, and began considering whether Greyback’s condition resembled a failed Animagus or a magical creature.

• Vizet questioned Fenrir Greyback about Remus Lupin, and Greyback admitted that he had made Lupin a werewolf as a child.
• Vizet cast the Cruciatus Curse on Greyback and used enchanted shackles to restrain him as he transformed into a werewolf.
• Vizet used Sympathetic Magic and Magic Eye to examine Greyback’s heart, finding a werewolf-shaped soul atrium.
• Vizet cut away Greyback’s regenerating flesh and jaw when Greyback tried to bite him, then considered whether Greyback’s transformation was a failed Animagus or a magical creature.
• Vizet summoned the Soul Stone Monocle and observed a mark-like Thread at the location of Greyback’s heart.

Vizet investigated Fenrir Greyback’s soul and the Shadow World, leading him to suspect that Consensus Magic created Lycanthropy Disease and gave werewolves their magical creature bloodline. He tested the Human-Shaped Restoration Spell on Fenrir and collected his blood to investigate that bloodline further.

• Vizet found discrepancies between Fenrir Greyback’s memories and the cruel memory fragments in his soul, then followed a mark Thread into the Shadow World.
• Vizet sensed vast Consensus Magic and considered whether it had cursed the first Werewolf Wizard, creating Lycanthropy Disease and its familiar traits.
• Vizet returned to the laboratory and concluded that werewolves were not a natural magical creature, but that Consensus Magic had bestowed their creature bloodline.
• Vizet reopened Fenrir Greyback’s wound and cast the Human-Shaped Restoration Spell, weakening him.
• Vizet cast the Blood-Draining Curse on Fenrir Greyback and collected some of his blood.

Vizet used the Human-Shaped Restoration Spell with Patronus Charm techniques to temporarily isolate Fenrir Greyback’s violent emotions and return him to human form. Examining Greyback’s blood, Vizet realized that lycanthropy purified a wizard’s bloodline during transformation and began to infer how a wizard might become a magical creature through bloodline purification and “Consensus” Magic.

• Vizet noticed that the Human-Shaped Restoration Spell had altered the werewolf head in Fenrir Greyback’s Soul Atrium and devised a way to isolate Greyback’s Negative Emotions.
• Vizet combined the Human-Shaped Restoration Spell with Patronus Charm techniques and used the Mark Extraction Charm to observe the barriers separating Greyback’s cruelty.
• Fenrir Greyback lost his werewolf traits despite the full moon and reacted with fear and pain when Vizet examined his wound.
• Vizet tested Greyback’s blood and discovered that its bloodline power had been strengthened or purified by lycanthropy.
• As Greyback’s werewolf traits returned, Vizet reasoned that bloodline purification could turn a wizard into a magical creature, with “Consensus” Magic contributing to Greyback’s transformation.

Vizet reviewed his werewolf research and realized that supposed Muggles who survived werewolf attacks might not have been true Muggles. Hearing Filch catch Fred and George with an unexpected effect from a Scouring Charm, Vizet hurried to investigate.

• Vizet organized his research, concluding that Werewolf Wizards arose when a purified bloodline and Consensus Magic created a werewolf form.
• Vizet reread Malo Fufang's notebook and wondered whether Muggles who survived werewolf bites were secretly something else.
• Filch chased Fred and George through the castle with Mrs. Norris and cast Scourgify, causing the twins to slip and fall.
• Vizet recognized that the Scouring Charm from Filch's Fake Wand should not have caused the fall, so he hurried toward them to find out what had happened.

Vizet discovered that Mr. Filch’s Scouring Charm had developed a soapy effect that made Fred and George slip, and he investigated how the magic had changed. The charm’s behavior suggested that Filch’s wand had adapted to his frequent cleaning work, though Filch’s attempt to cast another spell failed.

• Mr. Filch found Fred and George slipping in a puddle of soapy water, and they revealed that they had made the newer “Toy Fake Wands.”
• Vizet apologized for not telling Mr. Filch, then examined the puddle and concluded that Filch’s magic affected only Fred and George.
• Mr. Filch wondered whether he had become a Wizard, but his Vanishing Charm failed while Vizet’s successfully removed the puddle.
• Vizet asked about the Scouring Charm’s new foam and smell, and Mr. Filch recalled that it had changed after the school’s big cleanup at the end of October.

Vizet discovered that Mr. Filch’s Fake Wand had expired after Filch unknowingly triggered its Scouring Charm effect in a dream and later tried it while plotting to trap Fred and George. The conversation turned to the mistreatment of Squibs, as Vizet recalled the Black family tapestry at Grimmauld Place.

• Mr. Filch recalled noticing bubbles in the Scouring Charm and suspected Fred and George had tampered with it, but Vizet explained how the charm’s detergent effect worked.
• Mr. Filch handed Vizet the Fake Wand, and Vizet found that its usable period had ended despite Filch receiving it only ten days earlier.
• Fred and George examined the wand and confirmed it no longer worked, while Mr. Filch admitted he had dreamed about casting the bubbling charm and later tried it to trap the twins.
• Vizet considered how Squibs were rejected by pure-blood families and remembered Sirius Black’s account of Squibs whose names had been burned from the family tapestry at Grimmauld Place.

Vizet questioned Mr. Filch about his ability to see Hogwarts, Peeves, and Dementors, and used his answers to develop a theory that Squib bloodlines could produce wizards. After Vizet suggested Filch might be able to become a wizard, Filch fainted.

• Vizet asked Mr. Filch what he remembered about first arriving at Hogwarts, and Filch described seeing the castle and its magic.
• Mr. Filch confirmed that he could see Dementors and described their cloaks, smell, coldness, and effects on happiness and memory.
• Vizet theorized that Muggle-born wizards descended from Squibs whose bloodlines had transformed into wizard bloodlines.
• Fred and George joked that Vizet wanted to turn Filch into a wizard, and Vizet said it might not be impossible.
• Mrs. Norris meowed, and the others saw that Mr. Filch had fainted and was falling toward the ground.

Vizet explained that Filch might become a wizard or learn magic through his bond with Mrs. Norris, who appeared to have Kneazle blood. He gave Filch instructions for preparing a mixture, leaving Filch eager to begin.

• Mrs. Norris and the twins helped cushion Filch after he fainted, and he woke to ask Vizet whether he could become a wizard.
• Vizet told Filch the best outcome was becoming a wizard and the worst was mastering only one kind of magic, while assuring him there was no risk of death.
• Vizet and the twins reasoned that Filch might learn magic connected to Mrs. Norris, whose diluted Kneazle heritage could explain her abilities.
• Vizet gave Filch two Mandrake leaves and instructed him to gather carefully selected dew, one of his hairs, and a strand of Mrs. Norris's fur.
• Vizet told Filch and Mrs. Norris to chew the leaves, combine them with the dew and hairs in a glass bottle, and carry it with them.

Vizet explained the ritual that could let Mr. Filch and Mrs. Norris gain magic, then entered the Otherworld to verify its design. He returned safely, refined the instructions, and gave them to Mr. Filch to follow.

• Vizet explained the moonlight ritual, incantation, and potion dosage to Mr. Filch, while Fred and George recognized its connection to Animagus training.
• Vizet entered the Otherworld, where an Aura Vortex copied his Ritual Magic with help from two star clusters before pulling him back out.
• Mr. Filch panicked when Vizet suddenly stopped speaking, and Fred and George feared he had burned out.
• Vizet woke and reassured Mr. Filch that he was fine, explaining that he had been verifying the ritual.
• Vizet revised the ritual instructions and gave the steps to Mr. Filch, who promised to follow them exactly.

Fred and George showed Vizet that their Canary Creams now used Butrielle, a Magical Plant cultivated by Neville and Hanna, instead of uncontaminated dew. Filch asked for some Butrielle to help gather materials for becoming an Animagus, and the twins agreed to send him a bottle.

• Filch tried to leave with the page listing Animagus materials, but Fred and George questioned him about it.
• Fred gave Vizet Canary Creams, and Vizet used the Skarpen Reveal Spell to discover that their formula had replaced seven-day uncontaminated dew with a new Potion Ingredient.
• Fred explained that the replacement was Butrielle, a Magical Plant Neville and Hanna had cultivated from Bubotuber and trientalis.
• Vizet deduced how Bubotuber and trientalis contributed to Butrielle and recalled that Luna had named the plant.
• Filch asked Fred and George for some Butrielle, and they agreed to send him a bottle the next day.

Vizet explained the principles behind Filch's Ritual Magic to Fred and George, including how magical creatures, enchanted objects, and sympathetic magic could help magic harmonize between beings. Fred and George saw a business opportunity in using the method to make Pygmy Puffs into customers' Soulmates.

• Fred and George urged Vizet to explain Filch's Ritual Magic in an empty classroom before the other students could join them.
• Vizet explained that magical creatures held much of their magic in their strong bodies, and that materials from them were useful in magic.
• Vizet connected the bond between wizards and magical objects to flying broomsticks, then explained that Filch's ritual aimed to bring his soul into harmony with Mrs. Norris's.
• Vizet described how Mandrake leaves chewed by Mrs. Norris, their hairs, Butrielle, moon magic, sympathetic magic, and Harmonizing Herbology contributed to the ritual potion.
• Fred and George realized they could use the idea to sell Pygmy Puffs as Soulmates and attract loyal customers.