I apologise for my bad english but i really need help with one of my players, I just wanted to introduce a new rule and when everyone agreed he went into my dms and actively debated it. Now i dont mind talking to me as a dm, or all in all argumenting against rules, but after a certain amount of time it got really personal dragging in outsiders and going as far as mocking me, calling me stupid, getting everyone else riled up in the party (everyone was against him and actually was fond of the rule as it bought back balance). Now we are at a standstill like a few months back where he actively did pvp and everyone was miserable while he went on a powertrip. Given that was my fault to begin with but I am cutting back on it very much and trying to make my supplement in the making into something everyone will be able to use soon. I am really looking for someone to help me with this i am frustrated to say the least, I made mistakes he did etc. I am really in need of help