From Karn to Arcum Dagsson.
The last bunch of times I've played EDH, I got picked on. Whether it was because of my general or I'm too good at the format or what, I was targeted first. I play multiplayer mostly and Karn isn't as good in multi as he is 1v1, so I'm going to give everyone a reason to hate me by trying to lock down the board as quickly as possible.
General:
Arcum Dagsson
Creature:
Trinket Mage
Artifact Creatures:
Arcbound Reclaimer
Duplicant
Epochrasite
Etherium Sculptor
Faerie Mechanist
Junk Diver
Karn, Silver Golem
Manakin
Master of Etherium
Master Transmuter
Millikin
Myr Retriever
Phyrexian Walker
Pilgrim's Eye
Platinum Angel
Scarecrone
Silver Myr
Solemn Simulacrum
Steel Overseer
Sundering Titan
Instants:
Echoing Truth
Ovinize
Thirst For Knowledge
Enchantment:
March of the Machines
Plainswalker:
Tezzeret the Seeker
Sorceries:
Argivian Restoration
Fabricate
Reshape
Thoughtcast
Transmute Artifact
Artifact:
Aether Spellbomb
Basalt Monolith
Clock of Omens
Contagion Engine
Crucible of Worlds
Darksteel Forge
Darksteel Ingot
Everflowing Chalice
Expedition Map
Fellwar Stone
Grim Monolith
Kill Switch
Lightning Greaves
Mana Crypt
Mana Vault
Mind Stone
Mindslaver
Mycosynth Lattice
Nevinyrral's Disk
Prismatic Lens
Rings of Brighthearth
Scroll Rack
Sculpting Steel
Sensei's Divining Top
Serum Tank
Skullclamp
Sol Ring
Thousand-Year Elixir
Voltaic Key
Ward of Bones
Winter Orb
Lands:
Academy Ruins
Ancient Tomb
Blinkmoth Nexus
City of Traitors
Crystal Vein
Darksteel Citadel
Dread Statuary
Gargoyle Castle
Hall of the Bandit Lord
16x Island
Maze of Ith
Minamo, School at Water's Edge
Mishra's Factory
Saprazzan Skerry
Seat of the Synod
Stalking Stones
Strip Mine
Svyelunite Temple
Terrain Generator
Tolaria West
Urza's Factory
Wasteland
For those of you who don't know what Arcum Dagsson does, he reads:

Legendary Creature - Human Artificer

:Target artifact creature's controller sacrifices it. That player may search his or her library for a noncreature artifact card, put it into play, then shuffle his or her library
2/2
So the plan of the deck is to get Arcum out there as early as possible and start sacrificing some artifact creatures and get lock pieces out there. Once a lock is established (if everyone doesn't concede or I don't back out) I can Just wait till I find a decent win condition.
The locks in the deck are:
Ward of Bones - If I can get a turn 1 or 2 Arcum, searching up Ward of Bones means that everyone else gets 1 more land than I do. Of course, a bunch of my lands add more than 1 mana or can be sacrificed, locking opponents at 2 or 3 lands, which makes it hard to get out of the lock or try to find an answer. By the time they do, I'll probably have found Darksteel Forge to keep the land count low.
Mycosynth Lattice + Kill Switch - Everyone can play lands, but what's the point if they're always going to be tapped as long as I remember to leave 2 mana open at the end of my turn?
Mycosynth Lattice + Darksteel Forge + Nevinyrral's Disk - Blow up the world every turn and leave my board hanging around? Sure, why not?
Mycosynth Lattice + March of the Machines - if the hand is broken enough, this can come down as early as turn 2, though that requires a lot of luck. This leaves everyone with no lands, but me with at least a 4/4 Enchantment Artifact Creature and a 6/6 Artifact Creature. Sounds good to me.
Mindslaver + Academy Ruins - Classic steal someones turn forever. Throw in Rings of Brighthearth to steal turns from 2 people.
With 5 lands that can produce 2 mana and 11 pieces of cheap artifact acceleration, Arcum can come down on turns 2 or 3 consistently, with the possibility of the occasional turn 1.
The deck doesn't have much draw in it as I felt that my general is a tutor himself and I'd rather tutor for am answer rather than try to draw one.
In case something happens to Arcum such as an early Pithing Needle, I have alternate ways to win, tutor and cheat artifacts into play.
Master Transmuter allows me to cheat large casting cost artifacts into play for the small cost of switching an artifact out of play. She also plays really nice with Monoliths and cards with CiP effects like Faerie Mechanist, Solemn Simulacrum and Sundering Titan.
The alternate win* creatures are Karn to animate artifacts to beat with and Master of Etherium or Steel Overseer to make the other artifact creatures and themselves bigger to beat in with
The alternate tutors in the deck are Transmute Artifact, Reshape, Fabricate and Tezzeret. Since Tinker is banned, I'm using most, if not all the Tinker-like effects I can and Tezzeret is a win condition also by turning all my artifacts into 5/5 beaters (as if people didn't know that on a Vintage forum).
Probably in this whole list, the only card that I don't think works as well as I hoped is Winter Orb. It may slow other people down, but once everyone else starts getting artifact acceleration out there, it's really not as good as it could be.
*Yes, I do realize I said swinging with creatures is an alternate win. Remember when swinging with creatures was the original win? Man, times have changed.