Not to nitpick but i think there's a few terminology issues you should clean up for clarity, unless I'm just misunderstanding which is entirely possible. (Putting one here to be helpful not shitty)
I think :
Growth of Vines
At the end of each turn, before
the next unit's turn, the active
player must
should be:Growth of Vines
At the end of each Unit activation, before
the next unit's activation, the active
player must...
There are a few more using the term "Turn" but the rules use "activation" for units, and "Rounds" for the end of a full sequence (Which is how i would interpret "Turn" so when its used for units it makes the brain stumble for a minute)Other then that cool stuff! i like how it can be overlayed on other missions