The core loop is so engaging that I played a bunch of runs without even really understanding all what I was doing.
I think this is the game with more potential among all the projects thatI tried in this jam (about 60) because it follows the design trends of the moment, but in a clever and innovative way.
My suggestion is to wait to add other mechanics, etc. and work on the UX/UI because at the moment it's what is preventing me to fully enjoy the experience (and from what I can see, this is also the opinion of other players).
It's not really mandatory to have good art skills, it's more something like replacing words with icons (instead of saying faith put the icon) and make everything more readable (for example the table on the left has misaligns entries and it must be available for consultation while you take the new ghost).
Anyway really good concept, I'm a fan of this genre and you nailed it!
It's my first game jam too so if you try mine... let me know what you think!