Vineart war trilogy

Once, all power in the Vin Lands was held by the prince-mages, who alone could craft spellwines and who selfishly used them to increase their own wealth and influence. But their abuse of power caused a demigod to break the Vine, shattering the power of the mages. Now, fourteen centuries later, it is the humble Vinearts who hold the secret of crafting spells from wines, the source of magic, and they are prohibited from holding power.But now rumors...

While his companions secure allies and gather information to combat a dark force that is threatening the Lands Vin, Jerzy returns to The Berengia to embrace his forbidden apostasy magic, an effort that poses a potentially greater threat to his homeland's survival.