Glimpses of Hyboria
A practiced pugilist, you know how to land an extra punch as part of a single combination of moves. Your off-hand blow might not be as powerful as your strong hand, but it is an extra edge whenever brawling.
Prerequisites: Dexterity 14+, Improved Unarmed Attack.
Benefit: When fighting unarmed (or whenever using unarmed combat-based weaponry), you are allowed to make a bonus off-hand unarmed attack at –4 to hit and adding only half normal Strength bonus to damage for that attack.
Normal: When fighting using solely unarmed attacks a character cannot normally act as though they have an extra weapon, only gaining bonus attacks from a higher Base Attack Bonus.