Revenge of the Sorcerer King Series

Oberon Blackphoenix almost united all the races on his part of the world. It would have meant a term of peace yet unheard of. Sadly, he was betrayed by one of his most trusted advisors. With his once friend's sword piercing his chest, he cast his last spell. Unintended by even him, his spell incorporates a legendary item that results in the world being cursed. Now over a thousand years later, a certain sorcerer once again wakes...and he is not happy. Alessa has been on the run for years. Never stopping in one place for long. 

Returning to Haven after freeing Alessa's mother, Oberon and Alessa work to grow their strength and forces in the shadows of the desert. Their string of destruction does not go unnoticed though, and the Lordships gather their own forces to protect themselves from the undead that appears to be spreading like wildfire in the west. The only question is, will they be enough to stop the force of nature known as Oberon? 

A month has passed since Oberon and Alessa defeated the Expedition forces sent against them by the Lordships. Their power has grown to the extent that the desert can provide. Ever frustrated by the level system of the world, he decides it's time to take a bigger piece of the pie. Marshaling his new forces, he heads into the continent. Mayhem is marching; may the gods have pity on anyone standing in his way. 

Oberon has made a splash on the world. With his undead armies amassing, he continues to gather strength to unite the world in death and destruction. To do that thoroughly, he needs more than a few things. Hunting down an artifact that will give him power equal to a god, he is forced into the Wandering Labyrinth.