Guardian - A. J. Calvin - Bog

Alexander has been sent on a perilous journey through the Southlands, a pilgrimage all would-be magi must undertake in order to develop their abilities. His brother, Andrew, was named his guardian by the Oracle, a strange woman with the ability to see glimpses of the future. The brothers do not know the land or its dangers, but both understand the importance of the journey.
With the proper training, Alexander will become instrumental in opposing Colin's tyranny in their homeland of Novania. Colin is king; he has reinstated the Mark Inspections and seeks to execute anyone born with the Mark of the Magi, whether they are trained to use their abilities or not. That his brothers escaped his grasp once is a source of ire for Colin, and he plans to make war directly on the magi to the south who harbor the fugitives.
The natural dangers of the land may not stop Alexander from succeeding in his quest, but the royal assassins sent to pursue Andrew might prove to be their undoing. Andrew is sworn to protect his brother no matter the cost to himself...
Even if he is the last of the dragon-kind.