(Standard) Mono Green

Here is the list I am working with: https://deckbox.org/sets/744426

I primarly built it because of Hornets Nest, and used a little combo as the core of the deck and built off of it from there ( Hornet Nest + Setessan Tactics (along with an Aspect of Hydra to make the combination a bit stronger)). Currently it is still in the test cycle, and I have not playtested it aside from testing hands, so currently I cannot provide much information on how it runs since it is also still mostly proxied.

I've been playing around with it, and I am not sure what to do with it to "finish" it up. I am half tempted to wait till the next set comes out so that I can wait for some more options, but as it is now I am iffy on a couple spots:
Nylea, God of the Hunt
I like the trample for my creatures, and the 6/6 body is quite nice, but I feel like some other cards may fill the spot a bit better.

Hornet Queen is one of these cards since when it comes out, it brings 4 dt fliers with it for a total of 6/6 dt flying, and it seems great, aside from the 8 mana casting cost, though it may not be much of an issue for the deck to cast, let alone Chord of Calling for.

Soul of Zendikar
This card I like for its creature pump, my only problem is that I don't know if the creatures its pushing out are relevant compared to what the deck is doing, and applying pressure.

Soul of New Phyrexia
Pretty awesome card for the indestructable effect, but I am not sure if running it just for that is enough to justify the spot over another card.

Another part of the deck I am working with is the mana, where as I have black splashed in for Thoughtseize. I have used this card as a sideboard card for another one of my decks that runs Elvish Mystic, and when the Mystic isn't cutting it, this card picks up the slack, but with a mono-colored deck it has its drawbacks to being included.

I've picked an awkward time to build a post ravnica rotation deck, but there are lots of pieces available to use currently that mesh together well. I am open to hearing any opinions on it, even if you think this list is no good, so bring anything you've got!