Mudvayne Skin

And whenever you go into the river your defensive items temporarily wash off and you take true damage from all attacks.

Also you get a raspy male voice singing random mudvayne song lyrics every time you proc your third auto attack.

https://s-media-cache-ak0.pinimg.com/236x/8d/1f/4c/8d1f4cb88a93ea120614b3bd08fb2924.jpg