Transformation (a.k.a. Transubstantial Transfiguration^[1]) is the name given to a branch of transfiguration that focuses on deforming the physical features of an object. It is not to be confused with Trans-species Transformation, though that is a type of Transformation.

It contains the following sub-groups all of which overlap with each other to varying degrees): Human Transfiguration, defined by and named for the target being a human being; Switches, which simultaneously exchange features between organism; and the aforementioned Trans-Species Transformations, which refer to Transformations that change organisms from one species to another.

Methods

Transformation can be achieved in a number of different ways, namely: Transforming spells^[2], Animagi, Metamorphmagi and Lycanthropy.

Transforming spells

General

• Avifors
• Cauldron to Sieve
• Draconifors: Turns statues of dragons into real dragons.^[3]
• Duro
• Ears to kumquats
• Fera Verto: Transfigures target animal into a water goblet.^[4]
• Glass to sand shield
• Incarcifors
• Lapifors
• Match to needle
• Piscifors
• Raven to Writing Desk^[5]
• Rock to dog
• Scribblifors
• Smoke to daggers
• Snufflifors: Turns books into mice.^[3]
• Steelclaw
• Tentaclifors: Turns a person's head into a tentacle

Trans-Species Transforming spells

• Human to pig
• Human to ferret
• Animagus reversal spell
• Pullus
• Vermiculus
• Ducklifors

Human Transfigurations

• Human to pig
• Human to ferret
• Human to armchair
• Animagus reversal spell

Appearances

• Harry Potter and the Chamber of Secrets (video game) (PS1 version only) (Mistake)
• Harry Potter and the Goblet of Fire (Mentioned only) (Transforming Spells and Cross-Species Switches)
• Quidditch Through the Ages (real) (Mentioned only) (Mentioned as Transubstantial Transfiguration)

Notes and References