The Ashes of Worlds by Kevin J Anderson

The culminating volume in Kevin J. Anderson's Saga of Seven Suns weaves together the myriad storylines into a spectacular grand finale. Galactic empires clash, elemental beings devastate whole planetary systems, and the factions of humanity are pitted against each other. Heroes rise and enemies make their last stands in the climax of an epic tale seven years in the making. The Saga of Seven Suns is one of the most colorful and spectacular science fiction epics of the last decade.