7000 Castles Book III — Thrones of Ice and Roots. 7000 Castles

The world is no longer preparing for war. It is preparing for something far worse. After the first global catastrophe shook the foundations of every continent, new alliances must be forged-or everything will fall. In the frozen lands of Frigoria and the untamed jungles of Zanara, an unprecedented union is born. Not through trust. but through blood. Two ancient lineages bind together in a ritual that will decide the fate of their people-and perhaps the world itself.
But the moment their blood unites, something answers. Something beneath the world.