Type: Epic
Source: Dragon #297
Your sneak attacks are particularly demoralizing and painful.
Prerequisite: Sneak attack +8d6, Str 21+
Benefit: Any time you inflict damage with a sneak attack, you can choose to forgo a number of additional dice of sneak attack damage to make a staggering strike. A creature struck with a staggering strike must make a Fortitude saving throw (DC = 10 + your Strength modifier + the number of sneak attack dice sacrificed) or only take a partial action when he would otherwise be allowed to act normally for a number of rounds equal to the number of sneak attack dice sacrificed.