No, you can't have mana symbols that aren't in the mana cost of your general, which appears to be a significant portion of your deck. I'd consider using Urborg Tomb of Yawgmoth, Dark Depths, Coldsteel Heart, Mishra's Factory, Mutavault, Mishra's Workshop, Akroma's Memorial, Darksteel Citadel.
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Needs Valakut
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