The feat should be exlated, have scared vow and 13 ranks in heal as some of its prerequists and be called "healers vow" and the vow part is that anyone that asks you to heal them must be healed to the best of your ability. anyone you heal this way who is evil gets a "mark of justice" that ativates when that person commits a evil act (other than lying, cheating and stealing, for a good cause of course). you can chose which punishment it is.