It's certainly off the beaten path, whic I like. Let's open up with a few questions.
1. how do feel about Energy Flux?
2. how do you feel about Kataki War's Wage?
3. how do you feel about Null Rod?
These all hose me, but not insurmountably unless they're in combination. If you're asking if I'd run them, I think they're all too damaging to be worthwhile.
4. how do you feel about Hurkels Recall?
Hurkyl's/Rebuild is in my board (which so far consists of just that and Leyline of the Void and two more Duplicants). Do you think it's worth maindecking? If so, how many, given the almost complete lack of tutors in this?
5. do you feel that Sword of Fire and Ice would fit in here somewhere?
This is probably an example of me being dumb about Vintage, but that card seems slow to me. Is it secretly awesome in the format in general? If so, I wouldn't count it out of this deck in particular.
6. how do you feel about splash red for Goblin Welder instead of the splash U for Prosperity?
Honestly? I think it's probably better, but I also think it gets away from what I'm going for here. Without Prosperity, Vise is only really good first turn, often only on the play, and it could really just be replaced with Lightning Bolt. From there, I think it would make sense to evolve the deck into a more typical Aggro Stax shop deck that's been seen around, which is good and all, but not really the same as this.
I used to love Black Vice back in high school playing multi player casual (revised era). When I got into Magic again after a long break, and decided that I wanted to get into Tournament Vintage Magic, I saw what had become of my dear Black Vice TT . When it was unrestricted I did a little dance, but never did anything about building a deck for it. The only deck that i've heard of that has done well with Black Vice has been a R/G beats deck. Do you think that you could evolve this deck into some sort of Prison/control style deck that might force the player to hold onto cards?
Cards like:
Chalice of the void
Arcane Lab - can only play 1 spell per turn (works in conjunction with chalice to stunt Combo decks relying on 1cc cards)
Wasteland - mana denial program
Stripmine - Mana Denial program
Stifle - has MANY uses such as: stops fetchlands, Oath activations, Storm ability, Welder, Slaver, etc.
Crucible of Worlds - with wastelands and stripmines, this could be a very key Tinker target.
Mind Slaver - it's pretty random, but it could give you a chance to put the opponent back enough turns they never make it back, also a second Tinker target.
Jester's Cap - as a budget deck, this could be a good SB card for you to Tinker in versus combo, stealing Tendrils, warrens, gifts, Tidespout tyrant 1and2 and that silly card that allows them to search outside the game for cards.
9 Spere effects - if this wasn't a budget deck, I would say that this set of cards would greatly improve your matches, while bringing you closer to a classic MUD list of course.
Some of those are pushing control a little more than I'd like. I have done some testing with some of those (Chalice, Spheres), but unless you get some serious stuff going turn one on the play, they aren't that useful for generating damage from Black Vise, as they're often down to 2-3 cards in hand by the time you start playing that stuff out. Arcane Lab fits in this category, I suspect, but maybe not; however, it does raise another issue, as it doesn't play well with Prosperity.
Cap does seem ridiculously good, I'll definitely use that.
I don't think I can support a set of Wasteland (not that I feel like buying them anyway

), as that would take me down to four blue-producing lands, which I think is too few; as such, Crucible probably isn't worth it just for Strip Mine.
Stifle does seem damn good, particularly for the (currently abysmal) combo matchups... do you think that's worth maindecking, or just boarding?
Slaver I hadn't thought of. I'm normally resistant to that card, but I'll give it a try in here... I could see it paying off sometimes.
Honestly I don't think that this deck would make it in Tournament Magic, but certainly the aspect of building your own deck and refineing it to the best you can make it is reward enough sometimes. Lastly, the who knows factor. If you can find ways to have this deck exploit weakness across the Vintage board, while doing it very quickly you might have something on your hands. My suggestion was mana denial as everything except Ichorid uses it. Even so, your deck will at least shut off Bazaar
I should mention, I suppose, that I have no grand visions of this becoming a tier one phenomenon or anything. I just want it to be decent enough to play in local low-stakes tournaments, while being something at least somewhat original in a format that seems awfully hard to innovate in. I'll also mention that this isn't meant to be a combo deck; Prosperity-Vise acts as an extra finisher or early burst of damage, but I'd say 60-70% of the deck's action is driven by the efficient beats.
In any case, thanks for the feedback!