Weirdest thing happened in new Draft

So we were all picked. I was jungling Kindred. Everything was tops. My friend jokingly offers to switch with Lucian. I do, and don't give him back. Funny pranks all around (Lucian isn't half bad in the jungle). However, the skin I have is PROJECT: Lucian. While loading, me and my friends were freaking out because I had Renegade Lucian. I don't own it. Neither does the friend I traded from. It just sorta happened. I thought the skin I had was preselected, as it was on other champs. It was, but this happened. I still don't own it. But I played with it for one game. What the heck happened?