Vorpal Strike (Epic)

• Prerequisites Strength 25, Wisdom 25, Improved critical (unarmed strike), Improved Unarmed Strike, Keen Strike, Stunning Fist, ki strike (adamantine).
• Benefit Your unarmed strike is considered to be a slashing vorpal weapon. (At your option, any unarmed strike can do bludgeoning damage instead, but it loses the vorpal quality.) This ability doesn’t stack with similar abilities