Shattering Blow

You can deliver terrible shattering blows so strong that they smash your own weapon to pieces but also inflict grievous harm upon your foes.

Prerequisite(s): Rage class feature, Power Attack.

Benefits: While raging you may make a single melee attack as a full round action using your full base attack bonus. If you hit, your weapon is destroyed and no longer usable, regardless of its hardness, special abilities or remaining hit points. However you also automatically score a critical threat, which you may then roll as normal to confirm, with a second successful attack roll.

Normal: When you roll a natural 20 (or lower natural number depending on your weapons critical threat range) you can potentially score a critical hit if you succeed on a second attack against the target creature.