Story from Within
a successful CON save can prevent being infected initially, prevent ability damage/drain each day, and recover from the disease after two consecutive successes; Heal checks can be substituted for the saves. Alternatively, remove disease cast at any point will remove it.
Effects: 1st failed save: +2 STR and 3/4 movement.
2nd failed save: +4 STR, half movement, and -2 Con.
3rd failed save: +6 STR, half movement, and -4 Con, Darkvision.