Disabling Poison Prison

The user can produce an extremely thick smokescreen which immediately makes the opponent cough and blinds them, it also covers up the scent of the user and his allies. He may then attack at free will. The caster and those who have trained it can see clearly through the smokescreen. If unable to escape the smokescreen after an hour, symptoms include paralysis and deafening. If left in the screen for over three hours, it is lethal.