A 'Disease' Domain for Pathfinder

A little while back, I was thinking about putting together a Pathfinder Dragonlance campaign for playing online.  Still haven't actually gotten around to starting a game, but I did create a 'Disease' domain for a cleric of Morgion that I was going to use as an antagonist.  I built off some fan-created work that was around on the web, as well as some older 3e stuff:

Disease Domain
Granted Powers:  You are immune to the effects of all non-magical diseases.  However, you are still a carrier of mundane diseases- you can contract them and transmit them as normal, but never suffer negative effects such as attribute or HP lost as a result of infection.

• Touch of Filth (Su):  As a standard action, you can coat a weapon with filth fever by touch. This disease lasts 1 round, or until discharged by a successful melee attack. You can do this a number of times per day equal to 3 + your Wis modifier. The Fortitude save to resist the filth fever is calculated as per your domain cleric domain abilities, rather than the base save of the disease itself.

• Aura of Illness (Su): At 8th level, you can emit a 30-foot aura o sickness for a number of rounds per day equal to your cleric level. Using this ability is a swift action. Enemies in the area gained the sickened condition. These rounds do not need to be consecutive.

Domain Spells:  1st - Ray of Enfeeblement, 2nd - Ghoul Touch, 3rd - Contagion, 4th - Poison, 5th - Insect Plague (flies and maggots instead of wasps or bees), 6th - Eyebite, 7th - Waves of Exhaustion, 8th - Horrid Wilting, 9th - Energy Drain

Use it with Papa Nurgle's blessing.