MUD is a deck i like so much in legacy, but it isnt in my reach. Then i start to think some way to play same line in modern and surprise the opponent. We still have access at good pieces play both Legacy and Modern. We dont have acess to the Sol Lands, then the fast way to make mana in modern is transform it in Urza land'sand, we cant use Wastelands, then we can use the Tectonic Edge Encroaching Wastes and Ghost Quarter's package.

http://www.mtgsalvation.com/forums/the-game/modern/deck-creation-modern/786722-mud-in-modern

We can use Chalice of the Void to have protection, Trinisphere and Lodestone Golem to slow the opponent. We can use Mind Stone and Everflowing Chalice - or other mana rock as Mox Opal for exemple, its importante have an 0 CMC and will explain why later - as Ramp/Mana redundancy for not to depend Tron online 100% all time.

Kuldotha Forgemaster + Lightning Greaves combo can win on T3 if we assemble tron and have some 0 CMC artifact to cast it in this turn to serve as food to forgemaster: cast Kuldotha, Greaves + some 0 artifact, sacrifice all minus Greaves get Blightsteel Colossus from deck equip and beat. (depends on the match, Chalice of the void as 1 is very importante to not got a Path of exile on Colossus.

Trading Post + Spine of ish Sah can start devastate Lands or Creatures of a slow decks. Spine give us some advance in mirror against tron, especially if we get tron on T3 and cast Spine.

Attack the manabase. ALL MANA. This give us more effective use of the ramp pieces (Mind Stone + Everflowing Chalice) and consequently make Lodestone Golem more powerful.

http://www.mtgsalvation.com/forums/the-game/modern/deck-creation-modern/786722-mud-in-modern