Hand of Osano-Wo
From Compendium of Worldly Lore
Needs review
Source: Rokugan Campaign Setting
Description: You are adept at wielding your strength to your best advantage while using two weapons
Prerequisites: Base Attack Bonus +3, STR 15, Two-Weapon Fighting
Required for: Prayer's End
You gain your full strength bonus to all damage with your off hand weapon. This feat applies to double weapons as well.
Normal
Only one half of your strength bonus can be applied to damage dealt with your off-hand weapon.