Cheshire Cat Rengar Skin

The Cheshire Cat is my absolute favorite character from Alice in Wonderland, and so it got me thinking, what better character to be the Cheshire cat than Rengar? The main reason why I think this would be a cool skin is because Rengar can "disappear" just like the Cheshire Cat, and since he becomes visible when he's close to you, I think there's a lot of potential to have a grin appear during his ult (when he's close enough).

EDIT: Or Cheshire Tahm Kench, after further discussion.