When playing a character possessing true Faith, the player may roll the character's Faith (difficulty equals the vampire's Willpower). The number of successes is the number of steps backwards the character can force the vampire to take. If the character places her holy symbol against the vampire's body, each Faith success inflicts one Health Level of damage upon the vampire. This damage is not aggravated, but if five or more successes are scored, the vampire needs to make a Courage roll or enter the Rotschreck.
It costs five freebie points to buy a level of Faith. It costs the character's current rating x 3 in experience points to raise Faith up to and including five dots, and the current rating x 5 to increase it thereafter.
It should be emphasized that Faith is not used like a gun. True Faith only occasionally has an obvious effect in a story, and is all the more powerful for its rarity.