The Conjuring Man. The Cunning Man, A Schooled in Magic Spin-Off, #3

Adam has come far. From a lowly apprentice, and a powerless one at that, he has discovered a whole new field of magic, combining magic and technology into one, and become the leading light of the university.  His innovations have made many other things possible, from powerful magics anyone can use to hot air balloons and flying battleships.  And the world has changed beyond hope of repair. And yet, the war is not yet over.  King Ephialtes of Tarsier may have lost one army, but he has others - and secret weapons, capable of keeping his aristocrats in check and eventually destroying the university.  As his own people rise in revolt, and Adam and the rest of the university's population are drawn ever further into the fighting, an old enemy plots his final moves . .
And the final battle between the old world and the new is about to begin.