Waiting for your favorite champion to get a buff.
While champions that beat the shit out of you get buffs is absolutely infuriating. Why the hell can't a less than 50% winrate champion get a buff? Why can't we just nerf the 55% winrate champions? Its like "play this champion or expect to lose" right now. Whats so hard about nerfing top tier champs or buffing trash tier champs? Its not like you don't have 3 seasons worth of data on why a champion is or isn't doing well.