Nevarra: The Age of Peace
Greater Vital Strike (Combat)
Prereq: Improved Vital Strike, BAB +16
Whenever you make a standard action attack or a charge, you now deal an additional amount of damage equal to the weapon dice plus strength. (or DEX if Agile Fighter or other ability) If you are using a weapon in two hands, you instead deal STR and a half. This bonus stacks with Vital Strike and Improved Vital Strike.
If you are using an unwieldy weapon you now deal quadruple normal attack damage instead of triple.