The Lost Gate by Orson Scott Card

The Lost Gate is the first book in the new Mither Mages series from New York Times bestselling author Orson Scott Card. This book centers on Danny North, a young boy descended from the old gods, Loki, Odin, etc. but seems to be ungifted in magic. He soon discovers that he is a gatemage, the one time of mage that must be killed on spot.
Danny takes off from the family compound determined to learn gatemagery. Anyway possible.