[@Draconic_Cat]

Nice app, accepted! One thing to mention -- the Nature Artifact would be pretty overpowered if you could use it just as if you actually possessed the Element, so you'll have to be a bit more specific with how the control of plants works. 

You can have the Artifact control plant life present in the area, with limited ability to control and grow them, but much more than that starts to break away from the specific purposes that Artifact are typically created for.