Seriously though, these free week champ rotations
I play the free week champs every week (high mastery score OP). There are typically a couple that pop up that I've already played. This week, however, only 2 champs are available that I haven't played. Why don't you put some of the champs that haven't been on the rotation in a long time on it? There are still a lot of champs I want to try out...but can't do it when you repeat champs like Rek'Sai.