Hogfather - Death's sword

'There's no blade,' said the oh god. 'It's Just a sword hilt.’

Susan stepped out of the light and her wrist moved. A sparkling blue line flashed in the air, for a moment outlining an edge too thin to be seen.

The oh god backed away.

'What's that?'

'Oh, it cuts tiny bits of the air in half. It can cut the soul away from the body, so stand back, please.’

‘Oh, I will, I will.'

Susan fished the black scabbard out of the umbrella stand.

***

Hogfather p232