Map's edge / David Hair.

Follow a renegade sorcerer off the edge of the map, in a thrilling adventure perfect for fans of Scott Lynch, Brandon Sanderson and Sebastien de Castell... Dashryn Cowl has run out of places to hide. The erstwhile sorcerer of the Imperial College fled the Bolgravian Empire when his high-flying family fell from grace, but the tyrannical empire is still hunting for him. So when he gets his hands on a map showing a place outside the known lands rich in istariol, the mineral that fuels sorcery, he sees a way back to power. There's only one problem: it means masquerading as an Imperial Cartomancer (an instant death sentence) and finding some dupes to help him mine the istariol in secret, no questions asked.