Freeze the Lifeblood
Prerequisite: Unarmed Strike >= 1, Lightning Fists, Find Weakness >= +12, Brawl BAB >= 6.
          OR: Martial Mastery, Lightning Fists, Find Weakness >= +12, Brawl BAB >= 6.
Benefit: When a monk with this feat punches a victim whose CR is two or more lower than her own, the creature has a chance of being paralyzed for 1d4+1 rounds. On a critical hit, great blow or 1 in 3 normal attacks, the victim must make a Fortitude save (against stunning fist save DC) or be rendered immobile.  Only living creatures can be paralyzed.