You can unleash attacks against an opponent that has dropped its guard.
Benefit: While using the Snake Style feat, when an opponent’s attack misses you, you can make an unarmed strike against that opponent as an attack of opportunity. If this attack of opportunity hits, you can spend an immediate action to make another unarmed strike against the same opponent.
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.