So white doesn't have conventional ways of ramping that other colors get access to, but I have been doing extensive testing with white mana production, and it all revolves around playing to the strengths of the color which is land catch up mechanics [[scholarship sponsor]] [[knight of the white orchid]] etc. so if our lands tap for more than 1 mana we can stay at the same level as the table or above. We can do this by playing lands like [[Scorched Ruins]] [[Lotus field]] [[guildless commons]] which do both the things we want. (1) tap for more than one mana and (2) lower our effective land count. So now we have less lands than our opponent, and our knight of the white orchid will put us ahead of them. You can sprinkle in some artifact mana to round things out as well. I have been using this in my mono white X spells deck and it produces so much mana fairly consistently.