Had an idea for a Disease domain and wanted to get input as to whether it seems balanced. It will be used in my campaign by clerics of a demon. In the core it could be used by any God, Devil, or Demon having Infestation in their portfolio.
Disease Domain
Deities:
Granted Powers: You are a beacon of corruption and disease. Your touch sickens people and eventually even your very presence spreads disease. You do not take any damage or take any penalty from diseases. You can still contract diseases and spread them to others, but you are otherwise immune to their effects.
Sickening Touch (Sp): As a melee touch attack, you can cause a living creature to take 1d6 points of damage and to become sickened for a number of rounds equal to 1/2 your cleric level (minimum 1). You can use this ability a number of times per day equal to 3 + your Wisdom modifier.
Plague Bearer (Su): At 8th level, you can emit a 30-foot aura of contagion for a number of rounds per day equal to your cleric level. These rounds do not need to be consecutive. Living creatures in this aura (except you) must make a Fortitude save with a DC equal to 10 + 1/2 your cleric level + your Wisdom modifier. Creatures that succeed on their saving throw are immune to this aura for 24 hours. Those failing suffer from a disease as per contagion and take 1d6 points of damage per round as their flesh rots. The rotting ceases as soon as they move out of range or the ability ends, however, the disease remains until cured.
Domain Spells: 1st—doom, 2nd—pox pustules, 3rd—contagion, 4th—poison, 5th—insect plague, 6th—eyebite, 7th—creeping doom, 8th—horrid wilting, 9th—energy drain.
Thanks for your time and help!