Mother of Storms Star Requiem Book 1

It is on this planet, where only the Windmasters can summon the devastating power of rain, gale, thunder, and lightning, that the last surviving remnants of humankind have come, fleeing the destruction of their empire at the hands of the alien Csendook. And it is here the human race will be resurrected...or exterminated. The sorcerers of this barbaric, inhospitable world have vowed to cleanse Innasmorn of the uninvited "abomination." And somewhere in the swirl of the dimensions - eons distant but as near as a word of power - the relentless Csendook destroyers scent human blood on the galactic wind.