In my set review, I posted that it was one of the top 5 cards in Future Sight for impacting Vintage. Maybe you should have read that

Seriously though, we have been seeing a ton of Bomberman decks doing well in the last few weeks. I've seen Dan Cunningham's list top 2 the last few weeks. In addition, there were *TWO* Mindcensor Bomberman decks in the Mean Deck Open's top 4 last weekend.
We made a concerted effort to thoroughly test that matchup and understand the role of Aven Mindcensor.
Mindcensor exploits each and every angle of the formats tactical manuvers:
1) Gifts
2) Grim Tutor
3) Flash combo
Most major decks rely on tutors and fetchlands with the glaring exception of Ichorid.
On the other hand, we discovered something else critically important: Aven Mindcensor, while amazing, is a card whose greatest weakness is opponent's playskill/knowledge.
Here are the critical points:
1) Mindcensor costs 3. At every point in time in my testing against Bomberman, if my opponent had W2 available, I would assume that they can play Mindcensor. I realize this could box me in, but if I wasn't in a desperate situation and if my oppponent had a decent sized hand, making this assumption ensured that I didn't walk into a Mindcensor. There are two signficant subpoints I want to elicit: 1) the Bomberman decks don't always have 3 mana up. They may want to actually counter a spell and have only 1 or 2 mana up. At that point, you can break fetchlands etc. 2) sometimes, not very often, but sometimes, Bomberman can't find or keep a White open. It may have like UU and Mox Emerald. The Whilte will sometimes be in demand or simply not present.
2) Mindcensor is a 2/1. The importance of this is that most players biggest mistake against Mindcensor is going to be a feeling that once Mindcensor comes down they have to win immediately or lose.
This is a huge tactical error. It forces people to speed up and try to play faster against Mindcensor Bomberman - which plays directly into their game plan. On the other hand, once the Mindcensor hits, they'll play too aggressively.
2/1 is not a clock. Even two Mindcensors on the board is not a clock.
It's much like playing against SS. trying to rush and beat it is an equation for losing.
The solution is to wait and play patiently.
For instance, let's say you have a fetchland on the table and you *really* want that land or you have a Merchant Scroll. Just wait. There is no need to break or play these cards immediately. Let the Mihdcensor beat you down a few turns, if possible and then break. You dramatically increase the chance of find a cad.
That's another problem with Mindcensor:
3) you can still search the top 4 cards.
That's really the critical flaw. Combined with the fact that it is only a 2/1, you can slow down your play and the Mindcensor loses most of its effectiveness as a true hoser.
4) Your opponent will often want to play it as an instant to "counter" one of your key tutors.
This is a reasonble thing your opponent will want to do. Take advantage of this fact and manipulate your opponent in this regard. For instance, if you *want* your opponent to play Mindcensor, break a Fetchland or play a Merchant Scroll when it is advantagous for you to do so.
For instance,
Let's say your Bomberman opponent has untapped:
Island, Island, Plains, Mox Emerald
You have:
Volcanic Island, Underground Sea, Island, Polluted Delta
And your hand is Scroll, Dark Ritual, Necropotence, blue spell, etc, etc.
I might tap the Island and Volc to play Merchant Scroll in the hopes of luring out the Mindcensor so that my Necro can resolve (without them being able to play the Drain). Alternatively, you can bait first by breaking the Delta.
These little tactical tricks are amazingly effective.
In sum: the key to beating Mindcensor is anticipating it, playing around it, waiting to play tutors to increase the chances that you'll have targets to search out, and using the Mindcensor to bait and trap your opponent.
I honestly think that Mindcensor, while amazingly effective at hosing narrow decks, will lose most of its effectiveness once people learn how to play around it better. In game one testing, the Mean Deck was 9-2 against the Mindcensor Bomberman deck, and we decided it wasn't even worth playing the game one match anymore.
Stephen