Actually, I thought cornered market was good. I used it in an Eye of Singularity/Legend deck. The deck sucked, but it was fun to play.
I do want to say something about masticore, though. I really don't see the need for this card. Most of the games I play end up in a 'lock', and if I have to discard each turn for a creature that is only slightly helpful, I lose. But I do appreciate WotC making a card that I could get anything for. One guy offered me a mint beta lotus for five, too bad I only had four at the time. And what about flowstone overseer? I believe that is a very good card. Some say this is the next masticore. Don't say that, because the last masticore sucked.
I know I am going to hear a lot of chiding about what I said, but that is my opinion.
"This should be interesting.."