I built this deck at a time when I only had two decks and they were both combo oriented. My LGS was getting pretty tired of it so I built this. It doesn't have a really high win percentage, but it really helped me to understand the concept that having fun while playing is more important than winning. The primary win-con is using Karn to animate your artifacts and swing through for mass amounts of damage, but has the obvious alternate win-con of the Eldrazi and Blighsteel Colossus. I can be difficult to play because you have no way of bluffing your opponent unless you have Vedalken Orrery or something to give your creatures haste. With a deck like this it is literally what you see on the battlefield is what you have. Its helpful to remind your opponents occasionally. I've been attacked for having a larger board presence than other players, but I usually just explain that if what you see on my board isn't going to hurt you, you have no real reason to worry. It usually stops people from needlessly attacking you, but when it doesn't I usually die lol
1 Karn, Silver Golem
Creatures
1 Arcbound Reclaimer
1 Kuldotha Forgemaster
1 Duplicant
1 Steel Hellkite
1 Wurmcoil Engine
1 Kozilek, Butcher of Truth
1 Ulamog, the Infinite Gyre
1 Darksteel Colossus
1 Scarecrone
Sorceries
1 All is Dust
Artifacts
1 Everflowing Chalice
1 Mana Crypt
1 Mox Opal
1 Expedition Map
1 Mana Vault
1 Relic of Progenitus
1 Sensei's Divining Top
1 Sol Ring
1 Voltaic Key
1 Candles of Leng
1 Contagion Clasp
1 Energy Chamber
1 Grim Monolith
1 Lightning Greaves
1 Ratchet Bomb
1 Scroll Rack
1 Crucible of Worlds
1 Darksteel Ingot
1 Druidic Satchel
1 Forcefield
1 Mimic Vat
1 Oblivion Stone
1 Phyrexian Portal
1 Ring of Gix
1 Rings of Brighthearth
1 Sculpting Steel
1 Serum Tank
1 Worn Powerstone
1 Erratic Portal
1 Grimoire of the Dead
1 Icy Manipulator
1 Jester's Cap
1 Lux Cannon
1 Nevinyrral's Disk
1 Null Brooch
1 Prototype Portal
1 Quicksilver Amulet
1 Tawnos's Coffin
1 Thran Dynamo
1 Tower of Fortunes
1 Unwinding Clock
1 Vedalken Orrery
1 Gilded Lotus
1 Memory Jar
1 Mind's Eye
1 Mirrorworks
1 Predator, Flagship
1 Contagion Engine
1 Dreamstone Hedron
1 Planar Portal
1 Akroma's Memorial
1 Spine of Ish Sah
1 Darksteel Forge
1 Karn Liberated
Lands
1 Ancient Tomb
1 Blinkmoth Nexus
1 Buried Ruin
1 Darksteel Citadel
1 Deserted Temple
1 Dread Statuary
1 Dust Bowl
1 Eldrazi Temple
1 Eye of Ugin
1 Gemstone Caverns
1 Ghost Quarter
1 Rishadan Port
1 Homeward Path
1 Inkmoth Nexus
1 Maze of Ith
1 Miren, the Moaning Well
1 Mishra's Workshop
1 Mishra's Factory
1 Mutavault
1 Mystifying Maze
1 Petrified Field
1 Reliquary Tower
1 Saprazzan Cove
1 Scorched Ruins
1 Springjack Pasture
1 Phyrexia's Core
1 Strip Mine
1 Tectonic Edge
1 Temple of the False God
1 Tower of the Magistrate
1 Urza's Factory
1 Vesuva
1 Wasteland
1 Winding Canyons
1 Zoetic Cavern