Wow, Courser Of Kruphix is badass. And any excuse to play mono green is a good enough excuse for me. I've seen a few Mono green devotion builds but none were really tickling my fancy. Not that this one does, but IDK, it's here.
This build is very similar to something I ran once. I ended up splashing red though and adding nykthos and BTE. Monogreen devotion can get to be a lot of fun, but adding just a little red opens up a lot more options even without going full monsters.