itch.io

The enemies hitting for more than 1 hit point might make it much less effective but still worth to use in many scenarios. Makes the later enemies more menacing too.

I would say that after you click your first coin, you can't shake again until next turn. This way it will make it more "well, I will work whatever I have here" or "I have to shake more times until the planets align and everything shows what I want it to have". Maybe with a maximum of X shakes so...?