User can create and spread disease from their body

Pros:
-user can make diseases beneficial to targets
-user can create super diseases
-user can make undead diseases
-user can control diseases when its free
-user can get rid of diseases

Cons:
-user must always monitor diseases they make
-user will sometimes become overpowered by a disease
-user can't control how diseases spread
-user can only free diseases they have taken a month to make
-user can't eradicate disease they create easily

Weakness: carriers
User can't control the disease when it is on these people