The Moon and Her Associations
So, I have the Galaxy Tarot app for Android, and it uses the Rider-Waite deck. One of the functions in the app is to let you take a look at individual symbolical elements in the card's art, which I think is really cool~
I was looking at the symbol of the moon, and of course it's main correspondence is emotion and intuition.
The are five cards where the moon motif is present: The High Priestess, The Chariot, The Moon, The Eight of Cups, and the two of swords. In my mind these five cards are very much Get Shit Done cards, especially when it's hard.
I think it's interesting and also makes sense that these "get the hard shit done" cards are presided over by the moon.