announcement and preview comic:
"Shaco’s wicked grin hides serious thespian talent. To celebrate the one year anniversary of our Korean launch, the Demon Jester has shed his courtly garb in favor of the colorful attire of a masked dancer. Masked Shaco’s new animations and spell effects, including whirling fan-blades and talchum-inspired boxes, highlight the cultural tradition of Korean mask dance.
Add a layer of comedic mystery to your next match on the Fields of Justice for 975 RP, available now in the League of Legends Store."
Here is a video preview of the skin in action: