Black Bile
From Salem Wiki
About
Black Bile is one of the four Humours, it is used for study and to start the construction of buildings
In addition, your current Black Bile determines how fast you study.The more current Black Bile, the faster you study. Since study drains your Black Bile, without eating your learning will slow down over time.
Bear have an area effect attack that instills Fear which drains Black Bile. This attack penetrates walls too.
