Welcome to the Machine (EDH / Commander)

The main purpose of this deck is to use Saheeli, The Gifted to cast high cost spells for cheep and even for free, with her second ability. The other Saheeli Planeswalkers are there for some synergy, but mostly for flavor. Ugin is useful for making things cheap and for removal if needed. This deck provides decent artifact swarm, and the ability to untap your artifacts on each opponents upkeep with unwinding clock. The mana build is not fast, but that's not much of an issue. There is also a win con with Mechanized Production and Mirrodin Besieged, when you have 8 artifacts with the same name or with 15 artifacts in your grave, respectively. Padeem gives all artifacts hexproof, Mycosynth Lattice makes all permanents into artifacts, and Darksteel Forge makes all your artifacts indestructible. Ghonti's Aether heart is easy to pull off for extra turns, and Beacon of Tommorows is easy to cast, even in early game. The few eldrazi creatures are cheap or free to cast with Saheeli, and offer some destructive possiblity. It That Betrays takes opponents sacrificed permanents and gives them to you, and Ulamogs Crusher, Eldrazi Conscription, and All is Dust, help with that. Also, Keldon Firebombers makes all players sack all but three lands, and if It that Betrays is out, you get those lands. Fleet Swallower can self mill if you are going for the Mirroden win con.