The mage can cure sickness or disease in herself.
The rarity and virulence of the disease determines the target number required for overcoming it. A common cold might require three successes while Ebola might require 10 or more. Note that this spell provides no clues whatsoever toward providing a mundane antidote or cure for the disease.
Mysterium Rote: Blood of the Lamb
With poultices and strange elixirs, a mage of the Mysterium banishes illness and disease from her body, revitalizing and restoring herself from the ravages of even the most terrible sicknesses to the fullness of health.