Keepers of Antarra

Publisher's blurb: Antarra, continent of unparallelled wonder and terror, floats amid an ocean of crystal. The crystal travels far underneath Antarra’s war-torn surface and carries magic in its veins. Towers sit atop the greatest crossroads of crystal, controlled by warlocks and demigods who seek to shape Antarra in their own image. Only one can prevail, seize control of the crystal lines, and become the new Keeper of Antarra.