Green can have a spell velocity component which works with it, which I run (also check DBS's cube)
In my current cube iteration green is pretty heavy on spell velocity, but mostly creature spells. Usually the bottleneck to velocity is mana generation. In blue you can increase your spell to mana ratio with something like:
and green kinda does the same thing with creatures:
The difference being Frantic Search draws you deeper, gives you a spell count, and generates mana all on its own whereas Elvish Mystic doesn't do that. But that's where the other pieces of the puzzle come in like:
Tokens are a natural extension so I often seen the pairing with Red. In this case you can mix creatures and non-creatures:
Or, since you're doing velocity + creatures, the pairing with white ETBs is also common:
I think right now I could do more to support a pure non-creature version. Red/Green spells is kinda a deck - I've seen it drafted successfully before. The problem is, if you're already cutting Red and Green from other drafters, the power offered by say Earthcraft and Purphoros, God of the Forge is too high to turn down and you're more likely to get them. Instead the green non-creature spells deck tends to be lands matter cards like Harrow, Heartbeat of Spring combined with Turnabout, Frantic Search, that kind of thing. Maybe I'll try balancing out non-creatures options in green a bit to open up the available directions some more.
As a likely less helpful aside, I have been exploring the non-creature spells matter theme in Green/Black that focuses on paying and gaining life:
It's not currently enough to be it's own dedicated deck - it's more a small subtheme that can naturally come together. There's probably a low power version of this where you're not all-in on combo, but using lifegain as a control element to beat aggro while combining it with card advantage so it's not worthless against grindier decks.
EDIT: In basically all my posts, I use the same like 10 cards as examples, but they are just so fun and flexible lol
