The Book Cellar
This is book number 1 in the Gods Among Dragons series.
Eighteen years ago, four-year-old Vidar saved his newborn brother from certain death as a sacrifice to the Gods. He hoped, but never expected, his brother to survive but Eiryk did, hidden by Vidar when only a baby in the furs of a neighbouring chieftain. Now Eiryk is the heir of Uppsala, adopted by Chieftain Asmund Redhairs, and raised amongst some of the fiercest warriors and dragons of the Archipelago.
Eiryk doesn't exactly fit in. Born small, disfigured he is still the favoured son of Asmund and his heir. But his world is turned upside down when Vidar, the new Chief of the Rananki, comes for him and reveals just who he really is.
The brothers will have to move past this personal turmoil to join forces and stop a madman intent on stripping those of magik of their powers--and he has his sights on Eiryk and his unique gift with Dragons.