"It was a Quickening. I learnt it two years ago, but I've yet to - refine it," Sherral says, giving his hand a quick glance and finishing off the bar. He tugs his helmet back on, snapping the clasps back into place.

"It's a technique used by Judge Magisters. Drawing in and then expelling all the Mist around you in a single attack," he says. "During the war, I served under one. A Judge Magister, I mean."