ramp up colorless cards, basicly play high cost cards faster.
The ramp:
Harrow + Khalni Heart Expedition + Lotus Cobra
Walking Atlas
Mana never leaves and just grows with Omnath, Locus of Mana
Infanit turns combo
Emrakul, the Aeons Torn + Eldrazi Monument + Archmage Ascension (to find Emrakul again)
Enclave Cryptologist to get counters on Archmage