You have been blessed with a greater immune system. Disease does not harm you, but it can live inside of you. Any time that you would become diseased, you gain none of the symptoms or penalties for being sick and carry the disease with you until it dies out. Your unarmed strikes receive an additional 1d4 poison damage and force the target to make a successful Constitution saving throw against your Medic save DC (8 + your Wisdom modifier + your proficiency bonus) or be inflicted by a random disease which you carry. At 4th tier, you deal additional poison damage equal to the number of diseases which you carry.