In the lowest level of the second structure they come upon a pool of some unidentified fluid. Rising out of the liquid, the Archivist makes one final attempt to stop the party, but ultimately fails. Moving to the third and final structure the group finds a massive workshop dedicated towards experimentation upon immortal beings. At its center is Ephiseshen. Upon coming face to face with the mastermind that created arcane energy through the corruption of the elemental chaos, Tavitha immediately attacks. It is only with the help of the Eidolon and Cerberus that the party is successful, though Cerberus is struck down by Ephiseshen before he dies.