The last wisps of magic, now somewhat slowed, were disappearing into the ceiling.

‘To the Great Hall!’

The stairs were much wider here, and better lit. Panting and pineapple-flavoured, the fitter wizards got to the top by the time the fireball had reached the middle of the huge draughty chamber that was the University’s main hall. It hung motionless, except for the occasional small prominence that arched and spluttered across its surface.

Wizards smoke, as everyone knows. That probably explained the chorus of coffin coughs and sawtooth wheezes that erupted behind Galder as he stood appraising the situation and wondering if he dare look for somewhere to hide. He grabbed a frightened student.

‘Get me seers, farseers, scryers and withinlookmen!’ he barked. ‘I want this studied!’

Something was taking shape inside the fireball. Galder shielded his eyes and peered at the shape forming in front of him. There was no mistaking it. It was the universe.

He was quite sure of this, because he had a model of it in his study and it was generally agreed to be far more impressive than the real thing. Faced with the possibilities offered by seed pearls and silver filigree, the Creator had been at a complete loss.

But the tiny universe inside the fireball was uncannily—well, real. The only thing missing was colour. It was all in translucent misty white.

There was Great A’Tuin, and the four elephants, and the Disc itself. From this angle Galder couldn’t see the surface very well, but he knew with cold certainty that it would be absolutely accurately modelled. He could, though, just make out a miniature replica of Cori Celesti, upon whose utter peak the world’s quarrelsome and somewhat bourgeois gods lived in a palace of marble, alabaster and uncut moquette three-piece suites they had chosen to call Dunmanifestin. It was always a considerable annoyance to any Disc citizen with pretensions to culture that they were ruled by gods whose idea of an uplifting artistic experience was a musical doorbell.