Your primary weapon keeps a foe off balance, allowing you to slip your off-hand weapon past his defenses.
Benefit: While using Two-Weapon Fighting to make melee attacks, you can forgo your first primary-hand melee attack to make a Bluff check to feint an opponent. If you successfully feint, that opponent is denied his Dexterity bonus to AC until the end of your turn.
Pathfinder Roleplaying Game Ultimate Combat. © 2011, Paizo Publishing, LLC; Authors: Jason Bulmahn, Tim Hitchcock, Colin McComb, Rob McCreary, Jason Nelson, Stephen Radney-MacFarland, Sean K Reynolds, Owen K.C. Stephens, and Russ Taylor.