I haven't ever used anything like this but I was wondering if there was a server or if it was possible to create a server just for myself where I could do a sort of "God" mode and just go through and have some fun in instances and raids for a few hours. Maybe give myself some crazy damage ability and just tear up the bosses that griefed me for the past few years.
Thanks for any help, please be gentle as I don't know a lot about the terminology.