.... 4x windswept heath ????????? WTF. Obviously you meant to polluted delta/flooded strand. Your mana base lacks the single island. Also, you don't really have much accelerants in the deck, only 2x workshop, sol ring and mana vault. Your mana base is EXTREMELY weak versus null rod (no you cant tap the artifact lands for mana under a null rod). Also, in the case of your deck, damping matrix will also kill you. If you play on a budget, you definately should look for these accelerants:
mana crypt (why isnt it there?)
grim monolith
gilded lotus
lotus petal (perhaps)
ancient tomb
city of traitors
voltaic key (perhaps, if you play the full set of sol ring, mana crpy, mana vault, grim monolith and gilded lotus (more than 1))
I understand you want as many artifact lands for the ravagers, but the hard truth is that ravager and artifact lands gets hit a bit too hard by null rod.
Myr servitor isn't the great thing it looks in paper. I know I tried it in all the configurations (artificers intuition, survival of the fittest, welder, intuition, even buried alive), and they all pretty much sucked. The problem that you will notice very very shortly is that your opponent only needs to kill the last one remaining and it's a done deal. The problem is that it is VERY sub-par when you draw/play it, and you can immediately feel it. It's nice to intuition for 3, then play one, but the problem is that it's too slow for an effect that is sub-par. If you want a token generator, try pentavus. I do know it's not the best when combined with ravager, but at least the pentavus is good ALONE and doesn't requires you to sac all your artifacts to be decent.
You probably should cut some triskelion for more ravager. Triskelion and ravager are great together, because once you attack with a big ravager, you can sac it and move the counters to triskelion, then remove the counters for more damage.
It's not very clear what are the welder doing there. Other than jar, I don't exactly see any noticeable mind-blowing tricks you can pull off with it. It's not like triskelion costs that much to play. Sure getting back/exchanging a triskelion is funny, but it's not exactly a force by itself. Returning a sundering titan IS noticeable.
The deck has problems in it:
1-The deck really lacks focus. The BIG problem with skullclamp is that the ONLY target it has is myr servitor and triskelion (and, god forbid, welder). The myr servitors are very easy to deal with for an opponent, and so are welders. The myr servitors are only realistically 'decent' once you have 2/3, but you don't have tutors to get them. Remember "there are no bad threats, only bad answers". But your threats are all very sub-par or easy to deal with ! If you only draw a triskelion, it's good but really pales in comparison to what your opponent is likely to pull off.
2-The other problem is that your deck has many weak points to it, making it easy to be disrupted. Fish will really, really kill you at probably a 90/10 win ratio. Fire/ice hurts you bad. Lack of acceleration and strip/waste gives even more time to your opponent to build himself. Null rod is really your kill card. You see, fish has
all those cards, and fish is one of the most played deck at the moment.
3-frantic search. What is it doing here? frantic search is card disadvantage *and* is only good turn 3+. In your case you can't even play it before turn 3 because you don't pack any acceleration.
4-Where is tolarian academy? You might also want to put strip mine/wasteland.
There are many other small details which I could pick on. The important thing to remember is that your threats are not good enough and that your deck is very vulnerable to many cards.
Heres a few cards you should look for, considering your budget:
1-tolarian academy. this is a must.
2-mana crypt.
other suggestions (that you need to test to see if it fits in the deck):
1-grim monolith
2-gilded lotus
You really ought to check other artifact decks. There are many many key differences between the other decks and yours so that you can pinpoint the weak points. Analyse them and you will better understand what I mean.
In case you still don't know what to look for, you can always check my list for card ideas:
http://www.themanadrain.com/forums/viewtopic.php?t=18568
