Distracting Maneuver (3.5e Boost)
From D&D Wiki
You bellow a battle cry and whirl around madly as you mask your true actions.
Type: Immediate 1
Description: One opponent within 60 feet must succeed on a Will saving throw or become flat footed until the beginning of their next turn.
Special: Spellcasters within 30 feet of you must succeed on a DC 15 + spell level concentration check to successfully cast a spell.