The Surge is an annual flood of Quintessence that rushes through the leys and Nodes of London on the Autumnal Equinox. It is the continuation of an Effect put in place over two thousand years ago, when the first of London’s leys were shaped by pre-Roman mages. Their Effect endures to this day.
In modern times, the Surge is an occasion of great importance to the cabals of London, as their Nodes all produce far more Quintessence than normal. At the city’s central Node at the Temple of Diana, an extremely powerful outpouring of Quintessence takes place. Needless to say, the Surge is a period of considerable politicking among the cabals of the city as each strives to make the most of the occurence.