There are 40 champions in free champion rotation this week : r/leagueoflegends
Surrender at 20: New Free Champion Rotation Season 3 Week 11
Free Champion Rotation Week of April 12th : r/leagueoflegends
The Best Ways To Get Free Champions in League of Legends | TGG
Free Champion Rotation: June 1st
Surrender at 20: Free Champion Rotation Season 3 Week 17
Free champion rotation League of Legends - Home | Facebook
League of Legends' Free Champion Rotation For the Week of April 17, 2018
League of Legends on Twitter: "New free champion rotation, featuring Azir, the Emperor of the Sands | http://t.co/jpjeiJZqIl http://t.co/G1Rh11xxu2" / Twitter