The Malevolent Seven by Sebastien de Castell

‘Seven powerful mages want to make the world a better place. We’re going to kill them first.’

Picture a wizard. Go ahead, close your eyes. There he is, see? Skinny old guy with a long straggly beard. No doubt he’s wearing iridescent silk robes that couldn’t protect his frail body from a light breeze. The hat’s a must, too, right? Big, floppy thing, covered in esoteric symbols that would instantly show every other mage where this one gets his magic? Wouldn’t want a simple steel helmet or something that might, you know, protect the part of him most needed for conjuring magical forces from being bashed in with a mace (or pretty much any household object).
Now open your eyes and let me show you what a real war mage looks like . . . but be warned: you’re probably not going to like it, because we’re violent, angry, dangerously broken people who sell our skills to the highest bidder and be damned to any moral or ethical considerations.
At least, until such irritating concepts as friendship and the end of the world get in the way.
My name is Cade Ombra, and though I currently make my living as a mercenary wonderist, I used to have a far more noble-sounding job title – until I discovered the people I worked for weren’t quite as noble as I’d believed. Now I’m on the run and my only friend, a homicidal thunder mage, has invited me to join him on a suicide mission against the seven deadliest mages on the continent.

Time to recruit some very bad people to help us on this job . . .