I really enjoyed this! I also, like another commenter, assumed death was possible until I read that it wasn't. How many endings are there in total? My guess is 6, one for each final card and then the choice to use it or not.
I did try and give the impression that there was an element of danger to each choice, so I'm really glad it gives that impression. In terms of the actual number of endings, it's hard to say. The final card remaining (and the choice whether or not to use it) aren't the only factors that determine the outcome - the game silently tracks some other details throughout your journey - but some have more of an influence than others.