Magi, I don't think that last bit is such a great idea. Landstill relies quite heavily on card advantage - your opponent is more than likely going to appreciate getting 3 cards in return for 3 damage. Landstill needs the card advantage in a bad way to outweigh current or future threats.
Breaking your own Standstill offsets the ratio of threats to your ability to deal with them. Would you rather get 1 more counter and 2 cards vs. their one spell (which you could then answer with that counter), or make them take 3 damage in return for no return on investment and their getting more spells to play?
Of course, this whole discussion is really "just saying" - you just wouldn't run Black Vise in this deck in the first place.
My whole "break your own landstill thing" is sort of like a little thing to do if you've got the game in the bag or whatever...it's not like you'd need to do that anyways.