Hello I am ima_sheep(sux). Recently people have been asking me how to solo roshan at such a low level. After getting so much attention I decided to make a youtube tutorial on it. Have fun!
Note: I know this isn't the best possible way to solo roshan with an invoker at level 9 but this video is to show people who didn't know that it was possible
http://www.youtube.com/watch?v=Qum8e0hLPFk