Nothing particularly wrong with this one, although I feel like something is missing. There is a good working concept here, but it just wasn't taken to its full potential. It could be expanded upon in a variety of ways.
Maybe make the writings lead to real world meanings/events, show connections between the foxes and the writings, hell just make anything unexpected (in an outstanding way). There doesn't have to be a bloated narrative, just a few extra hundred words of something cool to think about. The biggest thing to think about with this RPC right now is if it is potentially lethal, which according to the discovery log, is 99% going to be true.
A tale or two could remedy this, but it would still leave the main article as it is, plus those are meant (in my opinion) to be bonuses. Overall, nothing wrong with leaving the RPC as it is, but it's just going to be very forgettable as it is now.
Was split between a 3 or a 4 star, but I like to be generous so 4 stars.