Type: General
Source: Heroes of Horror
Whether due to prolonged exposure or natural hardiness, you have grown immune to some diseases and resistant to all others.
Prerequisite: Constitution 13.
Benefit: You are immune to one specific type of disease, such as the red ache or mummy rot. In addition, you gain a +2 circumstance bonus on saving throws against other diseases (including magical diseases). You recover points lost to ability damage from disease at double the normal rate (2 points per day, rather than i). If someone with the Heal skill (including yourself) uses your blood to help someone with the disease to which you are immune, the diseased character automatically makes his saving throw to recover. If your blood is used to aid in the healing of someone with any other disease, it provides a +4 bonus on the Heal check.
Special: You can gain this feat multiple times. Each time you take it, you become immune to a new disease. The +2 circumstance bonus against other diseases does not stack with itself, since the circumstances of each disease immunity are essentially the same.