Black cards cost Energy+ 2 Sanity. The heart card cost HP+ 1 Energy. Sanity is another form of HP. The unamed variable is bleeding duration. While drowning (Water at the bottom of the screen) breathe cards will hurt, instead of regaining sanity. Fire cost table: 1-2 = 1 Energy 3-4 = 2 Energy 5-6 = 3 Energy
You smell blood by the lake, and when you look in... Thalassophobia: The fear of deep water.