Lightbringer Saga32 books in series
The Black Prism Publisher's Summary
In a world where magic is tightly controlled, the most powerful man in history must choose between his kingdom and his son in the first book in the epic NYT best-selling Lightbringer series.
Guile is the Prism. He is high priest and emperor, a man whose power, wit, and charm are all that preserves a tenuous peace. Yet Prisms never last, and Guile knows exactly how long he has left to live.
When Guile discovers he has a son, born in a far kingdom after the war that put him in power, he must decide how much he's willing to pay to protect a secret that could tear his world apart.
If you loved the action and adventure of the Night Angel trilogy, you will devour this incredible epic fantasy series by Brent Weeks.