Background: Ket'Thal, once a prodigious scion of House Azpar, is a name that evokes dread and awe in equal measure. Born into a lineage of mages and scholars, Ket'Thal exhibited an early and insatiable hunger for knowledge, particularly the forbidden arts. His curiosity led him to delve into necromancy, a path shunned by his peers. As his power grew, so did his ambition, culminating in a fateful pact with Belzorath the Unholy, an ancient Pit Fiend from the Nine Hells.

This dark alliance marked the beginning of Klethos' descent into ruin. Under Ket'Thal's leadership, the Order of Ket'Thal was founded, a secretive sect of necromancers and warlocks devoted to the study and practice of the darkest magics. Their ultimate goal was the pursuit of immortality and the domination of life and death itself. With the aid of his apprentice and now right hand and chief advisor Nathrak Ultar, and the archdevil Belzorath, Ket'Thal managed to open a portal to the Nine Hells, setting in motion the Great Cataclysm. This catastrophic event devastated Klethos, turning it into a cursed wasteland and nearly consuming the entire realm of Zyricus.

Ket'Thal's physical form was believed to have perished in the chaos of the Great Cataclysm, but whispers and rumors persisted of his survival. These tales spoke of his transformation into a lich, a powerful undead sorcerer who continues to plot from the shadows. Though no longer openly leading, Ket'Thal's influence is deeply embedded within the Order of Ket'Thal, which still operates in secret. Although his acolytes feign loyalty to Belzzothar and Nathrak Ultar, they work tirelessly in the shadows to bring about Ket’Thal’s return to power and to sow discord and chaos in Klethos and southern Zyricus.

The ancient necromancer's legacy is one of unparalleled malevolence and destruction. His mastery of necromancy and forbidden magics made him one of the most powerful mages in Zyricus before his downfall. His influence over the dark arts was so profound that even after his supposed demise, his teachings and followers remain a significant threat to the region. The floating necropolis of Klethos, a grim reminder of his reign, still hovers ominously over the cursed land, a testament to the dark pact that forever altered the fate of Klethos and Zyricus.

Ket'Thal's ultimate goal remains the same: to reclaim his seat of power in Klethos and to plunge the world into an era of darkness and undeath. His continued existence as a lich, if true, ensures that his dark influence will be felt for generations, as he bides his time, waiting for the perfect moment to strike and resume his reign of terror.