How to improve the Diplomacy skill mechanic in D&D 3.Xe and Pathfinder? I had a good use in a combat situation of diplomacy. It was during a battle and an extended roll situation to convince the grunts of a kobolds priest that he had been tricking and lying to and betraying them this whole time. It had the benefit of being true and after a number of rounds I was in fact able to get them to turn on that leader. It wasn't easy, but I see no reason it should be impossible.