It's going to be a quatrerstaff where it has 2 mace like ends on it.
or a 
Hey, that's an idea...making skins with actual items included in their art and character model!
http://4.bp.blogspot.com/-ERsMyTy4YdE/VUA9kTU5cXI/AAAAAAAACnY/YeDj5sOVcjM/s1600/ziggsw.jpg
Void staff, Abyssal and Rylais
True...although the skin's based off the blue merchant (I think it's the blue one, and the red is the walrus...?). If there was a skin that didn't rely on being a merchant to have an item, it'd be kickass. Like, giving a Ryze skin
or something.
I tried AP Yi build the other day in a custom match where I wanted to see how much damage he does by late game.
I went
I got my Thunderlord keystone.
I got my AP runes and shit.
Turns out, even without AD items (with the sole augment being the Sheen/Lich Bane proc), Yi still did physical damage around 3 times the magical damage he does with this build. That's saying something.
Unless I built this completely wrong, otherwise AP Yi is pretty much good as dead.
I cri.
.....................
Anyway, we need the Wizard Yi skin. ASAP!
Yi would only use the staff to heal, and would just use the staff to beat people to death, because the rest of the shiny stuff is too good for his opponents.
You're a wizard hair_yi_
Shouldn't be "You're a wizard, hair-yi!"?