God Level Necromancer: My Talent Multiplies All My Gains to 10000x

Arthur Miller was once one of humanity's strongest players, until the woman he trusted most betrayed him and cost him everything. But fate gives him a second chance, sending him back to the day before Genesis Realm descends upon the world. This time, Arthur remembers everything. He knows the future, possesses billions of Arvian Dollars, and chooses the Necromancer class instead of the Assassin class he once had. But his greatest advantage is the X Rank talent, Infinite Multiplication, which multiplies every gain he obtains by 10,000 times. He sold all of his properties and family fortunes, then bought the exclusive talent expending 50 billion Arvian Dollars. While others struggle to build their foundations with Bronze and Silver, Arthur spends Divine Gold to create an overwhelming foundation. While others are still learning the basics, his elite undead soldiers are already powerful enough to crush monsters far above their level. With future knowledge, limitless resources, an evolving undead army, and the most terrifying talent in Genesis Realm, Arthur has only one goal. This time, he will stand at the absolute peak. And when Genesis Realm finally merges with reality, the entire world will learn the name Darklord. — Description from novelcodex.org