Yin Yang Style (3.5e Feat)
From D&D Wiki
||- | style="vertical-align: middle; white-space: nowrap;"| Yin Yang Style | style="vertical-align: middle;" | Flurry of Blows
| style="vertical-align: middle; font-size: 0.9em;"| Choose between Flurry of Blows and Decisive StrikePHB II for full attacks. | style="vertical-align: middle; text-align: center;" | -</dplc>
 Yin Yang Style [Martial Style]
You can rush out in a mighty flurry or hold back to concentrate all energy on a powerful punch.
You possess both the Decisive StrikePHB II (Yin) and the Flurry of Blows (Yang) class features. Whenever you perform the full-attack action with an unarmed strike or with monk weapons, you may choose to use either of the two.
You may take this feat as a monk bonus feat at 1st, 2nd or 6th level.
Decisive Strike is a variant class feature for the monk, found in the PHB II.