Curse of Pestilence

Description
This curse is the representation of the Black Plague itself that can kill anyone who breathes in the infected air the only way to beat this curse is to beat it's user before the curse takes hold completely, it takes about 2 hours for it to take hold depending how much of the infected air is inhaled by the victim, it is possible for it to take hold in about 3 minutes if a great deal of the infected air is inhaled, Once the curse take hold it is impossible to cure though the user can control the plague so they can avoid killing allies this curse requires great magic control as it is able to annihilate cities with little effort.