For those finding the PDF for the first time, ensure you have the correct order. The trilogy is sometimes confusingly labeled:

In this final installment, the struggle moves beyond the physical occupation of Idhún by Ashran the Necromancer. Gallego introduces the "Panteón"—the six creator gods of Idhún: Irial, Aldun, Wina, Johavir, Neliam, and Careban