Myths and Mermaids: Oracle of the Water (Blue Angel, 2015). Especially given my own tricky relationship with this fluid, hard-to-pin down element of emotions.
It arrived today, and my first draw was just perfect: Mother and Child. Today, my elder son goes into hospital, so my kids are definitely top of my mind. It's interesting, too, that this is the only almost black-and-white card in the deck. Sometimes, it is that simple - there is nothing else more important to me!