My concern is not so much for damage off confidant, taking 4 from a single flip is not too large a worry for me should leyline prove the superior choice; rather I am concerned by how quickly one can arrive at 4 mana to cast leyline should it not be in your opener, if it should become bounced, or if it is destroyed and you draw a replacement. Extirpate by itself does not do enough, your concerns are justified. At the tournament I extirpated three times against ichorid and crypted once in a single game and it was nearly not enough. But extirpate coupled with crypt and a beater is often a sufficient delaying tactic. By nuking their moebas or bridges one can buy enough time to find a crypt to set them back further or build an attacker up enough to kill them in enough time.

My point is simply that while Leyline has the single most powerful effect, its casting cost is what makes it difficult for me to handle; it would be almost unplayable early enough if the first is removed to remain an impact. And its the game where your hate is in but you are on the draw that worries me the most for that situation. Jailer seems a fine choice, though.

Unfortunately, at this time I do not plan to attend the Waterbury.

As far as 1-cost cantrips go, I like the singleton top as well.  I think you have to look at the engine of the deck, though, and that is 4 sleight, 4 dark confidant, 1 gush, 1 top, 1 bstorm, 1 ponder, essentially the cantrips and the continuous cantrip (bob). I have also added 2 Impulses for additional digging power.  Altogether I think that this is enough, at least so far.  The one problem that I have run into, though, is that without DC or acall or gush it can be difficult to maintain hand size if you come under a lot of pressure. But this really only comes up in the combo matchup when your hand is quickly expended on countermagic, duresses, and cantripping to find more of the same.

Nice to "meet" you as well, Steven. I definitely came to appreciate the Tormod's Crypt. Its inclusion in the maindeck is for a number of reasons: Tinker out of the board, Tendrils pump, miser's card against the otherwise nigh-impossible game 1 against ichorid, and to save on sideboard space as I wanted at least 7 ichorid hate cards post board. How have the Leylines been for you? They cannot be unmasked which is very nice, but i fear their casting cost making them difficult to be relevant later on in the match.  I did not have as much success with them as I did with the extirpates.

While Fastbond can provide some fairly explosive starts from time to time, my main purpose for including it is to aid in casting a tendrils. On the will turns it acts like a dark ritual or two, generating anywhere from 2 to 7 mana in combination with your gush and the fetches you have already used. Often the tendrils will only be for 8-14 damage, and the fastbond makes up for the lack of rituals when comboing with will. I included it for the same reason as Steven. It makes will so much better and much more productive.

In testing I found myself playing an early bob (hopefully) or dryad, attacking for 6 to 10 damage, and then I would go for will and try to win with tendrils, but should that fail you are left with a lot of cards and/or a very large dryad or multiple dark confidants.  At the tournament, however, Will was often unnecessary, and I only ended up casting it twice all day, but it is a very nice plan should the shit actually hit the fan and you do find yourself trying to catch up, as will is pretty good at that. The card advantage from Dark Confidant coupled with the cheap library manipulation and duress effects is what really made my deck roll.

I realize a lot of what I just said is probably pretty obvious, but I thought it might be good to hear affirmation of what most of you were probably deducing before playing with the deck yourself. That is pretty much what you can expect from it.  It is not very will-centric at all, which can be very nice, but it is very confidant-oriented. Also, the deck flips to confidant very well, which makes running the 7 fetches and 4 thoughtseizes not as painful as they might otherwise appear when put with bob.

Steven, I think you should give dryad another look. Tarmogoyf can grow very fast because both players are working towards that end, but dryad will almost always do at least as much damage as goyf, but she can do so much more. Often she gains +3/+3 from when you play her to the start of your next attack step.

Edit: Steven, I have to agree that Imperial Seal is a very good card for this deck, and I did not give it enough consideration. I am glad you brought it up - I had forgotten all about it! It was probably an oversight on my part not to include it.

Wouldn't he have to eventually choose to stop the loop? Its not like a dragon draw where dragon is the only target and you have to animate it so the loop continues. Since he is choosing each time to untap or not to untap wouldn't he eventually have to choose not to untap? Otherwise it just seems like stalling.

The GAT list only had 4 moxen. No Pearl.

Actually, since it is a mana ability it will not use the stack, resolving immediately.  Then the draw trigger will go on the stack and wait to resolve.  Also, chromatic sphere does have the advantage of drawing cards post-yawgmoth's will, unlike chromatic star due to the star requiring it go to graveyard to trigger.

Carl, have you tried sensei's top? You could go to seven duress effects to make room since you have said eight may be too many, and it works well with the topdeck tutors.  I also suggest trying out LED.  It has been awesome for me.

Congrats on the finish.

I count six cards total between what you played, the ruby and welder, and and what remained in your hand, four more cards.  I'm guessing you were actually missing the response or spirit guide, because otherwise force could be answered by those two cards together.  Is that correct?

Kowal brings up a great many things that you will have to contend with in order to do well in a competitive.  Transferring the legacy deck to vintage does not seem viable; however, in the Open Forum there is a Turbo Gush thread started by meadbert that looks to be very similar in what you are attempting to accomplish here, but using Intuition and Gush for greater consistency and resilience.  I have not tested the deck, but the thread is very informative on what it is trying to do.  That may be a good place to start if you decide to pursue this general idea of land/crucible recursion.