Thanks for the feedback! I've always intended to come back to this and at the very least put together an Android version, and I think I'll take the opportunity to adjust some other elements of the game as well. I've got a little more experience styling things with Twine since making this and I think if I were to go back and make changes, I'd probably limit the current font to titles and links, and use a slightly more normal serif font for the main text.
I could possibly dial back the level of detail in the background as well. I started off with a blank parchment stock image and blurred/lightened it until it seemed to provide good contrast for the black text, but it could probably be taken a step further towards a solid background without losing the overall effect.
By the way, if the card you forgot was the spider then its effect literally is chance anyway! I was in two minds about including it because having a lot of them greatly reduces the player's influence over the story, but figured it would allow people to hedge their bets on a first run (since it's got a 50% chance of a good result any time it's used) and increase replayability for anyone interested in discovering all the possible options.