Scars of Mirrodin Block

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Everything is from Scars of Mirrodin block.
There is no 5-color identity Legendary Creature from Scars of Mirrodin block, so I punted and use Etched Monstrosity.
If someone ever were to balk at it (no one ever does), I would go off-theme and use Sliver Queen.
 
Mana Acceleration (8): General (1): Spells (28): Sideboard (Omitted/Cut card ideas):
1 Mox Opal 1 Etched Monstrosity 1 Argentum Armor 1 Indomitable Archangel
1 Palladium Myr   1 Contagion Engine 1 Contagion Clasp
1 Caged Sun Creatures (27): 1 Darksteel Plate 1 Tower of Calamities
1 Vorinclex, Voice of Hunger 1 Blightsteel Colossus 1 Karn Liberated 1 Slice in Twain
1 Alloy Myr 1 Platinum Emperion 1 Lux Cannon 1 Inexorable Tide
1 Pristine Talisman 1 Steel Hellkite 1 Mimic Vat 1 Carnifex Demon
1 Sphere of the Suns 1 Wurmcoil Engine 1 Mindslaver 1 Clone Shell
1 Mycosynth Wellspring 1 Glissa, the Traitor 1 Mirrorworks 1 Darksteel Juggernaut
  1 Jor Kadeen, the Prevailer 1 Nim Deathmantle 1 Thopter Assembly
Lands (36): 1 Chancellor of the Dross 1 Prototype Portal 1 Trigon of Thought
1 Blackcleave Cliffs 1 Geth, Lord of the Vault 1 Strider Harness 1 Sunblast Angel
1 Copperline Gorge 1 Massacre Wurm 1 Sword of Body and Mind  
1 Darkslick Shores 1 Necrotic Ooze 1 Sword of Feast and Famine  
1 Razorverge Thicket 1 Sangromancer 1 Sword of War and Peace  
1 Seachrome Coast 1 Sheoldred, Whispering One 1 Venser's Journal  
1 Inkmoth Nexus 1 Skithiryx, the Blight Dragon 1 Tezzeret, Agent of Bolas  
1 Phyrexia's Core 1 Chancellor of the Spires 1 Venser, the Sojourner  
6 Swamp 1 Consecrated Sphinx 1 Exsanguinate  
6 Island 1 Cryptoplasm 1 Blue Sun's Zenith  
6 Forest 1 Jin-Gitaxias, Core Augur 1 Dissipation Field  
5 Mountain 1 Phyrexian Metamorph 1 Asceticism  
6 Plains 1 Quicksilver Gargantuan 1 Genesis Wave  
  1 Engulfing Slagwurm 1 Green Sun's Zenith  
  1 Liege of the Tangle 1 Praetor's Counsel  
  1 Chancellor of the Forge 1 Elspeth Tirel  
  1 Hellkite Igniter 1 Norn's Annex  
  1 Hoard-Smelter Dragon 1 True Conviction  
  1 Urabrask the Hidden 1 White Sun's Zenith  
  1 Elesh Norn, Grand Cenobite    
  1 Victory's Herald