Your 4 Clifftop Retreat are relying on 1 Mountain to avoid entering tapped.
Also you have some nice Entering the Battlefield and Leaving the Battlefield creatures, with your current ramp you probably dont need farseek but rather replace with Cloudshift .
They also have the 4 Temple Garden to enter untapped as well.
I like this deck idea a lot. I was going to wait until Gatecrash comes out to do something like this due to me running Jund Zombies right now, but this is sweet. i would certainly consider running Selesnya Charm s somehwere in here due to their utility and over all awesomeness. Maybe even throw them in a sideboard or something. If you're going to make a sideboard I would also be sure to include Zealous Conscripts and Cloudshift as well.
@ phillthy_richYeah, I haven't posted my SB as of yet, but it does contain those cards.
I was also going to wait until gatecrash and play Either Junk or Jund Midrange this set, but I like Naya way too much to just wait. Even if I start losing at my FNM more, I just love Naya.
Your three-drop is kind of empty. Why don't you put in Loxodon Smiter ? It also goes with the whole "smitage" aspect, too.