I don't do all the background and the worldbuilding before I start the story. What I do is I work out the bare minimum I need to start the story, and often that really is a bare minimum - it's a character in a situation, and I know nothing about the character, I know nothing about the situation, and then I think about it for a long time, and make notes about where I think the story is going to go and so on, but I don't really make notes to do with the background or the magic system or the world.

Even now, she wished she could write a note, push it across the table, and go away to her room. But she was no longer a Second Assistant Librarian of the Great Library of the Clayr. Those days were gone, vanished with everything else that had defined her previous existence and identity.

Blood trickled down his chin as he was hauled up onto his knees, the golden rope securing his arms behind him and his ankles together. Arthur looked up and saw the fizzing sparkling crown coming down. I’m Arthur Penhaligon, he thought desperately... The crown was wedged tightly upon his head- and Arthur fell silently screaming into darkness.

Maybe if I act well enough, I'll come to believe it myself.

I suppose you could call me...Soot," said the thing. "Yes...Soot. I have breathed it, lived in it, and eaten it for so long that it is a fitting name." "Eaten it?" asked Suzy. "Why eat soot?" "Boredom," said Soot.

Clearly the Old One had the capacity to kill - or easily deliver some sort of final ending that sounded remarkably like death.

There were also very special or dangerous items that had to be fetched in person, or even by large parties of armed librarians.