Darkness at Sethanon

Synopsis:
The triumphant finale to the Riftwar Saga -- Raymond E. Feist's first classic, bestselling fantasy trilogy. As Prince Arutha and his companions rally their forces for the final battle with an ancient and mysterious evil, the dread necromancer Marcos the Black has once again unleashed his dark sorcerery. Now the fate of two worlds will be decided in a titanic struggle beneath the walls of Sethanon, as the link between Kelewan and Midkemia is revived.
From the Inside Flap:
An evil wind blows through Midkemia. Dark legions have risen up to crush the Kingdom of the Isles and enslave it to dire magics. The final battle between Order and Chaos is abotu to begin in the ruins of the city called Sethanon.
Now Pug, the master magician sometimes known as Milamber, must undertake an awesome and perilous quest to the dawn of time to grapple with an ancient and terrible Enemy for the fate of a thousand worlds.