Necromancer: Start by Refining Skeletons

In an era of depleted magic power, the undead are the only supernatural power. He traveled through time and became the most degenerate nobleman on the frontier, and was sent to the skeletal defense line with death on three sides by his political enemies. While everyone was waiting to see him being torn apart by the undead, Ron activated the [Undead Refining System]. Kill skeletons, seize soul fire, and refine legions. What others see as a desperate situation is his inexhaustible arsenal. One iron skeleton, ten, a hundred, a thousand... From the abandoned frontier outcast to the undead king who made the empire tremble. "Sorry, my arsenal does not produce surrenders."