The Darksword (Books #1-4 in the Series) by Margaret Weis and Tracy Hickman
The 4-book set of mass market paperback novels includes the below titles:
Forging the Darksword (ISBN 9780553268942): In the enchanted realm of Merilon, magic is life.
Born without magical abilities and denied his birthright, Joram is left for dead. Yet he grows to manhood in a remote country village, hiding his lack of powers only through constant vigilance and ever more skillful sleight-of-hand.
Forced to kill a man in self-defense, Joram can keep his secret from the townspeople no longer: he has no magic, no life. Fleeing to the Outlands, Joram joins the outlawed Technologists, who practice the long forbidden arts of science. Here he meets the scholarly catalyst Saryon, who has been sent on a special mission to hunt down a mysterious “dead man” and instead finds himself in a battle of wits and power with a renegade warlock of the dark Duuk-tsarith caste.
Together, Joram and Saryon begin their quest toward a greater destiny—a destiny that begins with the discovery of the secret books that will enable them to overthrow the evil usurper Blachloch . . . and forge the powerful magic-absorbing Darksword.
Doom of the Darksword (ISBN 9780553271645): Born without magic, Joram was one of the Dead, denied the throne of Merilon. For years, he lived among outlaws, surviving by wit and sleight-of-hand. Now, wielding the powerful, magic absorbing Darksword, Joram retums to the enchanted Kingdom that once was his home to win revenge and claim his birthright. Here he will test Bishop Vanya and his fierce army of Duuk-tsarith in a battle unlike any their world has known. Joined by the scholarly catalyst Saryon, the young mage Mosiah, and the trickster Simkin, Jorma confronts the shattering secret of his past and discovers the ancient prophecy that puts the fate of the world in his hands–the hands that forged the Darksword.
Triumph of the Darksword (ISBN 9780553274066): In a realm where magic is life, Joram was one of the Dead. Born without power, he was sentenced to the Turning – his mind to be imprisoned inside a husk of living stone.
Yet at the last moment, Saryon took his place, suffering the eternal torment for his young master. And Joram and his wife Gwendolyn vanished into the mists that marked the Border of the World…
Now, ten years later, Joram and Gwendolyn have returned to reclaim their rightful place in Merilon. Wielding one last time the terrible, magic-thirsting Darksword. Joram must confront the evil sorcerer Menju and his army of Technologists from beyond the Border in a final apocalyptic battle.
Rejoined by Saryon, the mage Mosiah and Simkin, Joram will fulfill the ancient prophecy of the Darksword – the prophecy that puts in his hands the power to destroy the world… or save it.
Legacy of the Darksword (ISBN 9780553578126): It is twenty years since the once-magical land of Thimhallan was shattered by the forging of the Darksword. The survivors of that catastrophe now live on Earth, bereft of magic and hope, forbidden to return home.
Only Joram remains behind on the world ravaged by his Darksword. Although the magic weapon has been destroyed–and with it, Joram’s power–rumors have risen that Joram has forged a second Darksword.
Now, as a merciless alien race threatens Earth with annihilation, Earth’s desperate leaders look to Joram as their only hope. But even as his old friend Saryon begins the perilous journey to seek his aid, the embittered Joram has his own plans for the weapon.
And Joram is not the only one. Soon a new menace looms, foreshadowing betrayal, enslavement, and death to humans and Thimhallans alike.