This has already been through quite a few iterations. Started with zero Blessings of Nature but have gone up to 4. Gets some nice draws with Experiment One into Strangleroot Geist. Can Rapid Hybridization your own Strangleroot Geist to evolve and still keep attacking. Pit Fight can do something similar. All sorts of interactions here. Not exactly a tournament deck but I've tried to make it competitive while keeping the heavy green with some blue mana base.

Could easily add another color but then it gets pulled in different directions and loses its identity.

Other neat tricks: Gyre Sage into Blessings of Nature into something large. Master Biomancer into Garruk, Primal Hunter and make a 5/5. Next turn draw 5. Lots of fun and shenanigans.