explain tribunal in your Terms of Service please
2.1.3. The Tribunal®. The Tribunal® system allows our community of users to police the compliance of other users with the “Summoner’s Code,” which outlines the principles of ideal game play behavior, as well as with our other policies. Community members, including you, may submit descriptions of activity and actions of certain users within the Game, and collectively determine if that particular user was in compliance with our policies. If The Tribunal determines, in its sole discretion, that you have violated one of our policies, we may suspend or terminate your account on behalf of the community.