A good way to wrap up the trilogy. Definitely should be read in order since the ideas behind the 'magic' grow with each book until we're finally given enough information to understand it. Overall, the story was a 4 star one. Modesitt has a real talent for coming up with systems that have a strict economy to them which places some very inconvenient limits on exceedingly powerful heroes. This magic system was a great example.
But I only gave this book 3 stars this time because I just detested the end game mostly because of how his wife came along with their child. Her carrying the child through that mess was just ludicrous. The reasoning for it was stupid & the way it was carried out far too convenient. Yuck! Otherwise, it was a very good book.
Spoilers below I hate to do it, but the main question & theme of the trilogy can't be discussed without it.
This magic system is based on the life force of a planet, basically the energy of the biosphere which creates ley lines across the continent. These were used by the Ancients, a native people who are dying out, for their civilization in a way that didn't disturb the natural order. The planet was invaded long ago by the Ifrits, a race that makes a practice of finding such worlds & draining them to create their high civilization. They took over the world, laying their alien ley lines along side the native ones. They ruled the world for a time, but then something broke their hold on the world for ages & now they're trying to get it back just as the last of the Ancients are dying.
Alucius & the other humans are 'steers', beings created/fostered by the Ifrits to provide labor & life force. A few have some ability to use the life force, thus are 'talented'. Alucius is quite talented & has been born at this critical moment. The Ancients help & teach him while the Ifrits try to kill him. Ultimately, he doesn't have much choice in what he has to do, but he comes to deeply understand the different philosophies of the 2 other races.
So the obvious theme is a question of philosophy between how much to use the resources of a planet for survival & civilization. The Ancients' way seems like the nicer one on the surface, but they're dying out. The Ifrits spoil the world, but their way leads to ordered societies with great arts & sciences. Ultimately, they're too self-seeking, though.
We're never told what caused the cataclysm that brought down the original Ifrit empire on the world. The remnants are pretty awesome, so it's hard to imagine, but let's Modesitt go back in time for the next trilogy for that story. I look forward to rereading it through this wonderful narration. I forget the guy's name now, but he's very good.