Anh, the opponent doesn't discard at the end of your turn. So when you pass he'll have to draw a ninth card. You could make the opponent draw cards until he has seven in his hand.
Nice to see so, much positive feedback, thanks to you all!
Not that I'm saying the original art is bad, but it looks more like a permanent than a spell. My version looks more spell-like, so I think you should use that.The larger version of the picture below: