So disclaimer this is just my opinion. Yours might differ.
I think Oak, Ash & Thorn is incredibly overpriced for some mid-tier artwork Tarot cards. There’s nothing new to it and the artwork makes it incredibly hard to get a good reading.
I disagree with a lot of the imagery of the cards. I don’t think any thought went into it and even the text is hard to read. It might be one of the worst decks I’ve ever used.
Personally, if I want to connect with nature in a reading, I prefer something like the green witch Tarot.
