User blog comment:Deshiba/Ban champion X!/@comment-4124337-20130811234919

You may not have been around long enough to know that they did increase the ban limit from 4 to 6 (2 per team to 3) after they realised that the champ pool increased. They WILL undoubtedly increase the ban limit to 4 per team soon, probably when the pool reaches 120 (4 more champions releases after Lucian) Just be patient :P