Recording at the speed of thought
Lets see... 45 grams of light stock paper, sourced from evergreen trees...A Transmutive Catalurgist can impart words and thoughts into a nearly blank notebook simply by holding it. Using this simple bit of Catalurgy allows for very quick, flow of thought style note taking -- perfect for clandestine operations, field work, or record keeping. Many Transmutists have even begun to keep a Journal for personal reasons, as spilling their thoughts into a book held in their hand is far easier than picking up a pen and writing them down instead.
Leather cover, 60 grams, dyed dark blue with fine cobalt powder...
One ink splotch, 5 grams... I'll need more ink to make this last.
Understanding and ModifyingAll types of Catalurgy are in the end, controlled by the mind; Genesists visualize, Aurists empathize, and Transmutists understand. A Transmutist can interact with and modify something she understands fully -- where she knows what it is made of, how those parts came to be, and what happens when one thing is removed from the rest.
Wait, what font do you think in? Is that a choice you make, or does it just automatically come out like that?
Extra EffortWith a bit more understanding and thought, a Transmutist can change colours and size of her Journal at will as well. This way, should the need arise for secrecy, she can disguise her Journal in the heat of the moment to hide it from any prying eyes.
Burn RiskAlthough the act of modifying a Journal to impart words upon its pages is relatively low effort, if done for long enough and at a high enough rate, serious burn can occur -- once, even to the point of Burnout
She was staring so intently at something I couldn't see -- and then suddenly, *fwoom*, this book she's holding catches on fire.