Aurelion Sol's Q is insane.
http://ideclarewars.blogspot.com/2016/03/blog-post.html
Check out how big you can possibly make this Q with Aurelion Sol. This was done by a player starting from inside the fountain base. Can you imagine how big this would be if it were at the enemies nexus? Holy.... He managed to reach the 2nd outer in mid lane... You can't avoid this haha, in team fights this is just too OP and it's a 2 second stun.
Just this size alone is monsterous... Just look at that stun zone. Veigar who again?
EDIT, I am currently watching the League Skin Spotlight channel live stream, he is doing crazy things with this champion.