Your critical hits cause opponents to become stunned.
Whenever you score a critical hit, your opponent becomes stunned for 1d4 rounds. A successful Fortitude save reduces this to staggered for 1d4 rounds. The DC of this Fortitude save is equal to 10 + your base attack bonus. The effects of this feat do not stack. Additional hits instead add to the duration.
You can only apply the effects of one critical feat to a given critical hit unless you possess Critical Mastery.
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SECTION 15