Don't bring a champion into ranked unless you have 6 mastery or higher

This post is mostly for players under diamond, but I'm sure it could apply at least in some degree to high elo players as well. Players need to stop bringing champions into ranked that they don't have enough experience with. Practicing champions is what normals are for. One-trick ponies are a special case, but for the rest of us, you're doing yourself and your teammates a disservice by bringing a champion into ranked that you aren't well practiced on. There are plenty of players like myself who only bring high mastery champions into ranked because it's the intelligent thing to do, and when you, as a player who just plays whatever in ranked, youre putting yourself, and therefore your team, at a disadvantage right from the start. On the occasion I get a team with mostly 6 or 7 mastery champions, we almost always win. When I get a team full of people who are inexperienced on their champions, we usually lose. It's not rocket science people, stop screwing yourselves over. I am aware that there are other almost certainly larger factors when it comes to winning, such as macroplay for instance, but this is definitely the first step in the right direction.