[hcobb]

ITL 74: "or every 10 minutes of game time when the party is in a room or otherwise standing still. Roll 1 die; on a 5 or 6, a nuisance encounter takes place."

BTW: They call her a pythoness because she casts Staff to Snake and then dodges while the enemy falls to her armor piercing snake. So that's one fatigue to clear each room.