Granted, most are raw artifacts which are pricier than the equivalent effect would be in white or green, but mana is not an issue when your commander is a machine that turns copies of Brute ForceBrute Force into Dark RitualsDark Rituals
This is actually the second MTG Secret Lair featuring brand new My Little Pony cards
Cards that allow you to play extra lands, such as Exploration, Burgeoning, and Azusa, Lost but Seeking, provide tremendous amounts of ramp
There are multiple ways to build the deck too, with Arcades, the Strategist being an excellent alternative to Doran as commander
Of all the decks I ever made, the one I played and tweaked the longest was a green-blue deck that I played at the very first Magic World Championships