Then I pretty much stand by what I said. I think there's a lot of "getting land into play" cards in this deck and not quite enough "actually doing things with all that mana" cards. If you put the name of a card into square brackets you can show cards here also, in case you hadn't seen.
I would cut two lands, and Journey of Discovery, minimum.
Add in [[Avenger of zendikar]] (or frankly any big green/blue guy you like the look of, but Avenger is a classic landfall card.) A [[Rite of replication]] can also swing games something crazy by copying an opponents best thing, and then something big and tramply like [[multani, yavimaya]] who will also recur himself and get you more land triggers.