Originally Posted by
jares
I wouldn't suggest going down to 18 lands, as minimizing the number of lands available will also affect the probability of the deck being able to maintain its preferred tempo. We surely would be able to successfully cast most of the cards that we have in the deck, but what's more important is that we are able to cast it at the best possible time (which can be translated simply into not missing a land drop in the first three turns). I prefer to maximize the probability of opening with 2 lands, so I run 20 lands, and use Fetch lands to control the mana-flooding.
I hope that helps.
Cheers,
jares