Mastery 7 Skins

Title.

Can we make it happen?

I have has mastery 7 Jinx for a while now and besides having a badge it would be cool to have a skin as well. Kinda like the Sivir skin to show you got gold or above last season. It could be like earn even more S tokens to unlock the skin with orange essence.

What are the champions you guys have mastery 7 on?