Championship Skins You Would Like to See?

I'm making this following a discussion a friend and I had. In the discussion, we talked about potential championship series skins we would like to see. Personally, I was (and am) all for Championship Yasuo, Ahri, Shen, Vayne, and Azir. When thinking about the potential ascetics of these skins, I was very intrigued as to how they would look. My friend was interested in Championship Rengar, Illaoi, Nidalee, and Shaco.

This prompted me to ask the following question: What Championship series skin would you like to see?