Hi! @revisesociology, great considerations! Spirit of the Forest is a key card in the splint of Earth, and I believe it is very worthwhile to invest in it or rent one.
I followed the game from the beginning, although I did not play, I participated in thousands of drawings and won almost 300 cards in these contests, since the launch, this helped me to form the decks later. Even so, I invested a lot buying new cards on the market.