I am trying to figure out how to build a Green/Blue druid commander deck with trample but am coming up short on the direction on how to build it. The main goal that I want is to use Gilt-Leaf Archdruid and steal other peoples lands and then cast Cyclonic Rift (overloaded of course) and go for the win. But I also want to have the ability to give my creatures Trample and possibly give them a few +1/+1 counters as well so their damage can get through to distract the opponents from what my main goal is. I am thinking of including Craterhoof Behemoth, Thunderfoot Baloth, and Primal Rage for the Trample effect, and Vigor to help protect my creatures from dying. The commander that I'm thinking of running is Rashmi, Eternities Crafter, but not sure if she is the right one to go with. Any help would be appreciated.
If you're playing Blue/Green you can run both Wonder and Brawn in the graveyard. There are some other support like limit blockers to one per creature and some support that makes them unblockeable like Open into Wonder
Well, if you want your Commander to be a Druid then Rashmi, Eternities Crafter and Tatyova, Benthic Druid are your two options, and both of them are really good at doing what they do (generating card advantage). I think that in general, both of these cards are probably your best bet as Commanders as a source of card advantage in the Command Zone is huge for a tribal deck that needs to have a critical mass of creatures in play and you can't always have a counterspell in hand for the inevitable board wipe. Edric, Spymaser of Trest would also fall into this category, although generating CA this way with Druids is going to be harder than a "normal" Edric deck that uses Scryb Sprites, Flying Men, and Slither Blades.
The other way to go is to put those cards into the maindeck and run Ezuri, Claw of Progress as others have suggested. As the Commander, you basically get more 'bang for the buck' so to speak for your investment on the battlefield when Ezuri pumps your guys, therefore you have to commit less to the board in order to still have a large board presence.