When Lee Sin gets his new skin

http://4.bp.blogspot.com/-5jaGyV2q0VA/UulUta7DOQI/AAAAAAAAP78/t3RfLEFhp1s/s1600/i-can-see.gif

Edit: http://www.surrenderat20.net/2017/03/new-social-media-teaser.html#more Source for those who haven't heard