I really like the mindsensor also. And run 4x in my B/W deck. I agree that you need to be abal to get him in to play fast though. So I have been thinking about either off color moxen or else maybe a few Ancient Tomb's. I think tomb is nice because it not only helps cast aven fast but also helps with chalice too. Though I think for a deck like this to want tomb you need at least 1 more aven in the deck and maybe null rod too. As turn 1 null rod seems nice.
But if you do not like the tomb idea I really think Lotus Petal maybe worth thinking about. As if you think about it this deck look to want 3 mana only once in the early game. Sacking a petal for mindsensor turn 2 (Or 1 with luck) seems good. So what if the next turn you only have 2 mana nothing else in the deck cost more then 2 mana to play.
Just a few ideas. Hope it helps some.
