Transmutation

Transmutation is the school of magic that changes the physical properties of some object, creature, or condition. Transmutation spells are known for simply transforming something into another.   
Mages skilled at the transmutation school are known as transmutation mages or alteration mages.  
Also: Alteration or Transmute magic
Transmutation Spell Types: 
Transmute – To change some or all (transform) of the physical properties of some object, creature, or condition. Ex: Changing a bird into a tree, or a rock into water. This includes changing parts, for instance, changing the mass or strength of a warrior. Transformation is the complete transmutation of one complex thing into another. Transformation often refers to the study of transforming living beings into other living beings, as part of lifeblood magic.         
Animate – The use of animancy; to give lifelike properties to inanimate objects, such as walking, talking, eyesight, mindfulness, etc. 
Transference – Magic that transfers physical properties or magical effects from one entity to another, such as strength, mass, burning flames from a pyromantic spell, etc. Materials in physical contact, physical appearance, hair, disease, clothing, wounds, etc. can all be transferred.
Conversion – To convert something into one other specific material, usually with a byproduct. Separation is the breakdown of something into all of its basic materials or constituents, in order to isolate them. Extrication is the separation of part of something, in order to extract a specific basic material or constituent.     
Intangibility – To render an entity intangible, in that solid matter can pass through it. Intangibility allows for walking through walls, and creating magical passwalls. 
Rearrangement – The rapid rearrangement of people or objects that occupy a given area; thus a change in condition.