Warwick Skin changed?

Thank you for answering this post in advance. I originally unlocked a big bad warwick skin off of a shard. No big deal right? I don't play warwick much so I use it for one game to try him out, then I drop him for a month or two. Today I decided to replay him in a intro game. My big bad skin wasn't there, and instead I had a tundra skin. I was okay with it because it looked cooler. But then when I tried out my taunts and my ctrl 1 ( I call them quotes) He said a big bad warwick line. "All the better to eat you with my dear." So I was extremely confused about what happened to my skin, and how it happened to change to this new one.