Prerequisite: Nightblade 6, Path of the Twilight Veil

Benefit: The nightblade's pattern effects are exceedingly potent. Each creature affected by the nightblade's pattern spells, spell-like abilities (such as distorting shadows), or supernatural abilities is treated as if its total number of Hit Dice were equal to its number of Hit Dice minus the nightblade's Charisma modifier (if positive) for determining the effects of those abilities. This does not stack with similar effects that reduce a creatures effective Hit Dice, such as an oracle's awesome display revelation.