Hogwarts subjects | Transfiguration: Transfiguration is a branch of magic that focuses on the alteration of the form or appearance of an object, via the alteration of the object’s molecular structure. Transfiguration can be done to most objects and it includes Transfiguration spells. Transfiguration is also regarded as “very hard work” & is “more scientific” than any other form of magic as in, you have to get it exactly right for the transfiguration to be successful.
"I thought I was the forth man!" Severus pouted, James looked sheepishly at the others, running a hand through his hair. "Right, I miscounted." He reached for the pen and scratched out the word 'forth' and wrote above it 'fifth'. "Fixed!"