For a look at the way i have it set out go to http://tappedout.net/mtg-decks/ub-artifact-ramp-1/ I also have taken out Fabricates for when i play mates and added in Transmute Artifact. Its a solid change.
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The Ravager is the BIG win in this deck tho!!!!!!
So i have had this for a couple of weeks now and i noticed like im sure you did, its a bit sluggish. It really tends to get bogged down from about 3rg turn untill 6 or 7th turn. I was being raped in this part of the game. Here are the changes i made: -2x Steel Hellkite, -1x Thopter Assembaly, -1x Mindslaver, -1 Time Sieve, - Vedalken Engineer and dropped 1z Treasure Mage. I then added +1x Thoughtcast, +1 Thirst for Knowledge and +4x Sol Rings. The rings are vital i believe as i can potentially have 6+ mana on the second turn (on a good draw). The thoughtcast's and Thirsts meant i was cycling through my cards faster. Treasure mage to grab Thopters and Hellkites, Fabricates for the Ravager and say another Retriever/Servitor or time sieve. I kept 2 mindslavers in coz they are fun and do screw around with ppl alot but i dont think they are nescesary.They could potentially be swapper out for say a couple of Howling Mines to keep it ticking over. Having said that Howling Mines can be dangerous. Overall i played this deck against a mates goblin deck and 3/5 times and they 2 that i lost were close. If it can go toe to toe with a goblin deck then the speed and sluggishness have been taken care of.
I have almost completed building this deck and i have taken a liking to how unique it really is. While it may be quite choppy right now as you say. I look forward to playing around with it and tweaking it in my own little way So if i find something that you have not discovered i will be more than happy to share them with you. You should be very proud of what you have created and i can guarantee that i will very much enjoy this deck. Thank you.