This is a really great concept for a game! It plays on the theme well and leaves a lot of room for thinking ahead to make your future turns go well. Not to mention the aesthetics are quite beautiful and very relaxing. Great work!
I'm not sure if there's a way to switch out any of the cards from the deck, but that could possibly be a good mechanic to implement if not. I think I got stuck with cards that made it quite time consuming just to get the frog back to the lily pad to score, which got a bit frustrating. I recognize that some of the challenge and strategy is born from having to plan out how to get the frog back to the lily pad, though, so it may also not be the best solution.