A Lord's Fateful Choice

A young man from the modern world inexplicably transmigrates into the body of a noble from another world named Warren.

Warren: The System may be a bit unreliable, but at least it works. My status isn't especially distinguished, but at least I have some capital to get started. I'll cultivate and farm at the same time. If I can't become emperor in this life, becoming a lord with power over the court will do just fine.

(Farming is the main focus, but there is also cultivation and combat. The protagonist has sound values, and his golden finger is fairly weak, serving mainly to advance the plot.)