Looks like fun; just a couple of nit comments.

When I played a similar deck, Harrow was always my absolute favorite land fetcher:
    +2 Domain in the early game
    that's 2 more basic lands you're not going to topdeck
    instant speed (can leave counter/swords mana up, saves Pristine Angel)
    only costs 1 effective mana, since the two new lands come in untapped; turn 3 harrow still lets you make a 2-drop or counter
Of course, Harrow doesn't accelerate you into early 4-drops (like Collective Restraint), which is the biggest bonus for Rampant Growth.

If you don't expect to Lantern, the 1 less mana to activate Soldevi Digger may be worth it.

A singleton All Suns' Dawn looks like fun too.  "I'll take Void, Savage Twister, Allied Strategies, Swords, and Regrowth.  Go."

??

Berserk:
  Info: Color=Green     Type=Instant               Cost=G               ABU(U)
Play only before the combat damage step.
Target creature gains trample and gets +X/+0 until end of turn, where X is its power.  At end of turn, destroy that creature if it attacked this turn.

I assume that means you took 10 from it on turn 2?