League free champion week: May 9 to 16 - Dot Esports
League of Legends Free Champs Rotation (November 15)
LoL: Free Champion Rotation This Week | EarlyGame
League of Legends Free Champions Rotation This Week (September 27) | Turtle Beach Blog
League of Legends Weekly Free Champion Rotation
League of Legends Free Champs Rotation (November 15)
Free Champion Rotation: June 1st
MOBAFire on Twitter: "The time of the Darkin has come. Check out this week's free champion rotation! https://t.co/UMSVSu2kjs https://t.co/tyWoWlOiAV" / Twitter
Sep. 13's weekly free LoL champion rotation includes Yasuo, more