I like your changes. It is important to keep the mana curve low. Have you considered Yeva? Most of your guys are green and it is a creature so it easier to find with naya tutors. Helps flashing in your mana doublers that are also creatures.
Private Mod Note
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To the people that say that a card needs to be a higher rarity because of Limited... I hate you guys so much. I present to you with this.
http://www.youtube.com/watch?v=SY8h2vp5Xis