Rhadoste like to make large miracles with magnetic properties, since it could foresee the enemy’s approach and arm its own forces appropriately, but simple imitation wouldn’t help me with the swarms. So instead of a simple magnet, I’d leaned on the Sisters to allow to ‘understand’ a nameless property. It was, essentially, ‘bodies with Night and bodies without Night’. As my miracle flared, the dead – ghouls, swarms, skeletons – were slammed against their own ramparts as a great force repelling all bodies without Night exerted its strength against them.

- Book 6, Chapter 57: Battery