@Horura;

Thank you! This was exactly the kind of guidance I was looking for. Also, I have Cavern of Souls for another deck and I love it. What's not to love? Eh... the price tag. But other than that, it's an awesome card.

Adding:
- Haven of the Spirit Dragon
- Raging Ravine
- Homeward Path
- Yavimaya Hollow

- Kodama's Reach
- Oracle of Mul Daya
- Courser of Kruphix

As for taking out the green-producing Elves, I'll try it and see how stuff like Oracle of Mul Daya and Courser of Kruphix go instead. I'll do that with the white, green, and blue deck I just posted as well.