The deck looks cool. The problem I see with it is that until you hit a card draw engine you don't do much, and they all cost 4 or more (with the exception of
Glimpse of Nature, which only lasts 1 turn).
Not sure what the solution is, but adding some more fast mana (
Mox Opal,
Mana Crypt ,
Mana Vault,
Mox Diamond... they are expensive, I know, but you have
Gaea's Cradle in the list so maybe budget is not a problem) and some tutors (
Worldly Tutor for example) to get
Beast Whisperer and similar may be a good idea.
Also I noticed you don't play
Sol Ring. The deck looks like it could benefit immensely from more fast mana as I was saying, so I would definitely add it.
Also since you play a lot of 1 thoughness creatures,
Skullclamp seems like an obvious include and it would give you more of that much needed card draw.