It's really not a bad build as is. While the cards suggested may help in their own way (especially the Embodiment that robort suggested) there is also the issue that if you are running
Rise From The Tides they may cut into the number of instants and sorceries going into your graveyard. My only suggestion would be
Brain In A Jar. While I don't believe you can use it to pay Awaken costs, it can pay for the land grab cards or even
Rise and leave your mana largely free. It likely wouldn't be a game changer, it could potentially help without hurting your current strategy. If you add nothing though, the deck will probably still play fine.