Hello!

I used to run a Karametra, God of Harvests combo deck waaay back before Paradox Engine was banned, and I'm curious as to your exclusion of cards like Aluren, Cloudstone Curio, Altar of the Brood, and Whitemane Lion. My approach to the deck was abusing ETB triggers with creatures that bounce themselves or strong effects that allow you to use ETB triggers multiple times. Are you trying to focus more on the "big creatures do big creature things and hit your face" and stay away from the combo aspect?

Regardless, I'm always interested in seeing how other people build decks around commanders I'm interested in and see the direction they take it.

Another suggestion is Concordant Crossroads - an all around allstar in any deck involving green as you can drop Avenger of Zendikar and a Craterhoof Behemoth and swing all on the same turn if you have the mana for it. Bunch of nifty stuff you can do with it. Another suggestion is Temur Sabertooth, as what's better than casting something once? Casting it multiple times!