Lesson 1: Transfiguration basics.

First off students, transfiguration is some of the most complex and dangerous magic you will learn at Hogwarts. Anyone messing around in my class will leave and not come back. You have been warned.
You must know the basics before I can start teaching you spells of any kind.
Transfiguration is the art of changing the form and appearance of an object and the vanishing of objects. This magical art is governed by Gamp’s Law of Elemental Transfiguration which acknowledges the limits to the power of this branch of magic.
There are 5 exceptions to transfiguration according to Gamp’s Law of Elemental Transfiguration: food, gold, information, love, and the soul (Although birds and flowers are created using transfiguration spells, they remain creations. It doesn’t mean they are really alive, as they depend on the spell duration).
Transfiguring can be done to most, if not all objects. Sometimes if it is done improperly the transfigured object can become half-transfigured or permanently stuck so be extremely cautious with pronunciation and proper wand technique.

Lesson 2: Spell

Avifors (AVI-forz) is a spell that transfigures objects into a bird or a flock of birds.
From Latin avis meaning bird, and fors meaning luck, chance which is a suffix often used for transfiguration spells.

Lesson 3: Untransfiguration.

In the previous lesson, I introduced the “Avifors” spell. Well this class I will be teaching you how to undo transfigurations and returning people or objects to their proper form.
In order to untransfigure someone or something, you must use the Homorphus Charm.
Remember to use proper wand technique or else this charm, and other spells will not work!

Lesson 4: Human Transfiguration.

Human Transfiguration is a branch of Transfiguration in which one Transfigures human body parts or an entire human being into another form. This can be considered a difficult branch of transfiguration because it is more powerful than turning an object into another object.
Human Transfiguration can be used to essentially replicate the natural abilities of Metamorphmagi, allowing the practitioner or the subject to take on an entirely different form, or make various individual changes to their appearance, such as growing or changing the color of one’s hair or taking on individual animal body parts.
However, while human Transfiguration can presumably be performed by any wizard who’s skilled enough, on themselves as well as on others, a Metamorphmagus is born with the ability to make such changes to their own bodies with little to no effort, and without the use of a wand.
Although it is possible to Transfigure humans into inanimate objects, it is unknown how someone someone Self-Transfiguring into an object would be able to Untransfigure without the intervention of another witch or wizard.

Lesson 1: Merpeople

Merpeople are sentient beings who live underwater in lakes and seas, although they can breathe air for short periods of time. Merpeople are intelligent folk who have developed their own culture and social structures and have a great love of music. Merpeople are found all over the world, including the Lake near Hogwarts. The voices of merpeople sound like screeching above water but are understandable beneath the waves, where they sound croaky. Their own language is called Mermish.
 Merpeople around the world vary in appearance just as humans do. The sirens of Greece are the oldest recorded merpeople, who match the descriptions of Muggle legend (and the painting in the Prefects’ bathroom), while the selkies of Scotland and the merrows of Ireland differ in appearance.

The merpeople of Hogwarts - who are selkies - have greyish skin and long, wild, dark green hair. Their eyes are yellow, as are their broken teeth, and they wear thick ropes of pebbles around their necks. Their powerful, silver fish tails allow them to swim expertly, while the upper parts of their bodies resemble those of humans. Merpeople are very tall. Harry Potterencountered one in the lake near Hogwarts during the Triwizard Tournament of 1995 who was seven feet tall with a long green beard and a choker of shark fangs, carrying a spear.


The merpeople’s village is located in the center of the lake, a quarter of a mile from Hogwarts castle. The edge of the village is marked by a large rock with paintings of merpeople on it; they are carrying spears and chasing the giant squid. The village consists of clusters of crude stone dwellings stained with algae. In the center of the village, the houses line a village square in which rises a crude sort of statue of a gigantic merperson hewn from a boulder.
Some houses have gardens of weed around some of them, and a few merpeople keep a pet grindylow tied to a stake outside their homes.
The merfolk who live in the lake near Hogwarts are led by Merchieftainess Murcus.

Lesson #1: Pitches

Lesson #1 Pitches
Pitches
Quidditch matches are played on (or rather over) an oval-shaped, 500 feet (150 m) long and 180 feet (55 m) wide pitch, with a small central circle approximately 2 feet (0.61 m) in diameter. At each end stand three hooped goal posts, each at a different height: one at 30 ft (9.1 m), one at 40 ft (12 m), and one at 50 ft (15 m), comprising the scoring area. There is also a line that shows mid-field, which is 180 ft (55 m). Quidditch fields have white shaded areas around the goalposts, to mark the scoring area and the bounds in which keepers must stay. These are on very few Quidditch fields. Since Quidditch is an aerial sport, Quidditch pitches are shown to feature spectator seating at high vantage points, either in towers (such as at Hogwarts) or in a fully-encircling platform, and the “top box” is considered the most prestigious place for a spectator to be seated. The British stadium that is shown for the 1994 Quidditch World Cup, is of this latter style, which appears similar to modern football or athletics stadium, albeit that the seating continues to curve upwards beyond the vertical, almost enclosing the pitch. Both the Hogwarts and World Cup pitches have been shown turfed with grass. The surface is used primarily for launching off at the beginning of the game, and on occasion for falling onto when players are dismounted from their brooms. Seekers, who sometimes fly close to the pitch surface, can be tricked into crashing into the surface occasionally at great speed (when tricked into doing so by the opposing seeker, it is known as the Wronski feint).

 

Lesson #2: Brooms

 Lesson #2 Brooms
Magical flying broomsticks are one of the forms of transportation for wizards and witches, as well as for playing Quidditch. Interestingly, Hogwarts Quidditch players are allowed to use whatever broomsticks they or their sponsors can afford, despite the fact that more expensive brooms often confer great (and arguably unfair) advantages in speed and manoeuvrability. The Nimbus model line has a reputation as one of the best in the Wizarding world. Harry receives a Nimbus 2000 during his first year so that he can play for Gryffindor. A Firebolt is an advanced professional-level flying broomstick and the most expensive and fastest racing broom in existence. It is said that they are the best in the world. They can even fly out of the atmosphere if the weather conditions are fair. Comets and Cleansweeps are cheaper than the Nimbuses and are more common. (The latter, however, has been identified as still a decent broom.) A Shooting Star is another brand of broom, but it is considered to be slow and out of style. Another broomstick series called The Bluebottle was introduced in the advertisements at the Quidditch World Cup, it was described as a family broom, with safety devices such as an anti-theft alarm. There is also another brand called Silver Arrows, as mentioned in Quidditch Through the Ages, along with the Tinderblast, Swiftstick, and Twigger 90, and the Oakshaft 79. The Oakshaft is the broom famed for its journey across the Atlantic and the Moontrimmer was popular because it was still controllable at extremely high altitudes.