The Disease spell infects the target with an illness, and can only be cast on your territory. They become surrounded by flies and take periodic damage. The nasty ability of this spell is that the disease spreads among the enemy's creatures, and will keep re-infecting them as long as they come into contact with an infected creature. The length of time the creature is infected depends on the strength of the spell cast. Similar to the Chicken status, any diseased creatures can be healed by putting them in the Temple. Sarificing a Vampire will cause all of your creatures to become diseased.