Magician. The Key to Magic, #2

Mar is no longer just an orphan thief from Khalar. He is now a feared and half-understood wielder of magic, the "lord magician" of a city under siege, and the one man Lord Ghorn believes can keep Mhajhkaei from falling to the Brotherhood of Phaelle. As he flies above battlefields, studies the laws of magic, and struggles to turn raw power into something he can actually control, Mar is forced to confront the burden of being useful, the danger of being needed, and the cost of standing between a city and destruction.
But the war is growing stranger and deadlier. The Brotherhood does not come with armies alone, but with relic-powered ships, covert traitors, prophecy, and a fanatical hatred of magic they do not control. As Telriy's inherited prophecy begins to close around him, ancient knowledge resurfaces, and the siege tightens toward catastrophe, Mar finds himself driven beyond survival and into command, invention, and impossible choices that will decide not only who escapes Mhajhkaei, but what kind of man he is becoming.
Magician is an epic fantasy of siege warfare, flying ships, magical discovery, prophecy, betrayal, and desperate rescue, carrying Mar from hunted outsider to the center of a war that is only beginning.