I'd suggest putting plummet in a sideboard or something, and add some ramp spells. Cultivate? Explore is fun too. I'm not a fan of Beast Attack.
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Edit: Sideboard Added.
Edit: Change Out - 2 See Beyond, 3 Negate for 4 Cancel, 1 Mana Leak.
I'm gonna give this a shot, since I love mono-green. I don't have the cobras, so i'll switch them out with 3 sunpetal groves or something like that. Also, I need 1 more Garruk, but I'll prob add in a 4th Khalni Hydra just to see how it plays out. Looks good though! (Y)
I'm a noob too. Been playing for 3 or so months. Thanks. :D check out my other stuff too!