There are 40 champions in free champion rotation this week : r/leagueoflegends
Surrender at 20: Free Champion Rotation, Week of January 19th
League Of Legends Reveals This Week's Free Champion Rotation | Player.One
League of Legends in Greece - Free champion rotation 1 http://eune .leagueoflegends.com/en/news/champions-skins/free-rotation/new-free-champion -rotation-2014-preseason-week-1 | Facebook