Paralyzing Fists
( Drow of the Underdark, p. 51)[General]
You can make multiple unarmed attacks to paralyze an opponent in a single round
Prerequisite
Improved Unarmed Strike (PH) , Stunning Fist (PH) , WIS 15,
Benefit
When two or more of your Stunning Fist attacks succeed in stunning a single foe in the same round, that creature must make another Fortitude saving throw (DC 10 + 1/2 your character level + your Wis modifier +1 for each successful Stunning Fist attack). On a failure, that creature is paralyzed for 1d2 rounds instead of being stunned for 1 round. Creatures that are not subject to extra damage from critical hits and creatures that are immune to stunning cannot be paralyzed in this manner.