After years of trial and error with ramp decks, I think I have finally come up with something that will rule all, so to speak. This is really expensive, however, look at the Karn Liberated and Emrakul combo. Restarting the game with Emrakul? What!? Yes, this is what this deck does given enough time, and if not, will be able to kill with Wormcoil Engine, one of my favorite cards.
So, the idea originally came from an old hydra deck, where I used the urzas to put counters on things like Primordial Hydra. Then things changed. I started to play competitively, and the Hydra deck wasn't holding up against control decks. So I needed something that didn't use a creature based ramp engine, so I made a dragon deck, that was a consistent turn 4, but once again, even though I was enchanting lands then untapping them, the ramp engine was so fragile that a lightning bolt would destroy it. So, I decided I needed to move away from creatures, to help keep the control of my deck down. So I was looking at all the land cards, this is when I can across the Urza lands. However, they were non basic lands so I spent a month trying to figure out how to get them all in play by turn 4. I eventually figured this out, with sylvan scrying and Exploration map. Then, I needed some creatures, and I went with one elderazi, and some other colorless creatures like Colossus of Akros and sundering titan. I was getting consistent turn 4 and 5's with this and all is dust added into the mix, but some elements still could be controlled. I wanted to move away from that completely. The idea is to get uncounterable creatures. This is where emrakul and Karn came in. Both of these can't be destroyed by petty spells like murder, and can win the game for you. With karn, you can exile emrakul from your hand and start the game over if you are in a pickle, or just play emrakul provided you have the mana for it. Chromatic star is what is helping provide the 1 colored mana for what you need for some colored spells, as well as help draw into something like an Urza or Emrakul. The side-Board is for control. It will slow the deck down by about 1 turn, but substantially increases the survivability of the deck. Pithing Needle can be used against cards like valakut the Molten Pinnacle, and even things like cancel can be counted with it. Autumn's Veil is for dealing with those pesky control decks using cancel, remand, and other pesky counter spells, and well, natures claim should be self explanatory.