Editing Midnight Taint Rules (section)

==Increasing Taint==
:  A creature’s taint is increased when it comes into contact with an area, object, person or effect that has a higher taint score than its own (for areas, objects, and spells, this is its Taint DC). The creature must succeed at a Will save or gain taint. The DC of the Will save is determined as described in the Tainted Places sidebar, which also indicates the amount of taint gained on a failed save and the interval at which a save against taint must be made if the creature remains in the area.
:  For Example: Aryn, a tainted Dorn fighter with taint 9, enters the icy wastes of the Vale of Tears (Taint DC 12, interval 1 week). After one week in the Vale, Aryn must succeed at a DC 12 Will save (with a –1 penalty to his save because of his 9 Taint points) or gain another point of taint. Aryn fails his save and his taint increases to 10. Later, his mission accomplished, Aryn heads south and sneaks into the Weal. He does not need to make another Will save during his time in the Weal because his Taint is already equal to the taint DC of the Weal, 10. However, if Aryn ever returns to the Vale of Tears and stays for a week, he will have to make another DC 12 Will save (this time with a –2 penalty to his roll because of his increased taint); if he stays for two weeks, he will have to make two saves.
:  Upon acquiring the corrupted creature or corrupted spirit template, the creature is thereafter immune to taint—the shadow’s essence has infused it completely, changing it forever.