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Given that all splats are not created equal, it was necessary to make a small change to the rules. In the event that a Vampire PC uses a Discipline ability that would require another player or NPC to make a check using a Virtue, that player or NPC may use 1/2 their permanent willpower (rounded down) instead of a Virtue, if they are part of a splat that does not have Virtues. Please Note: This does not means that splats that do have Virtues can use this 1/2 permanent willpower rule.
Additionally, please note that, in the case of utilizing this rule, no Willpower-related merits can be used to 'benefit' your roll.