Needs review
Source: Secrets of Sarlona

Description: You have mastered the style of fighting with two picks at the same time

Prerequisites: STR 13, Power Attack, Base Attack Bonus +1, DEX 15, Two-Weapon Fighting, Improved Sunder, Proficiency with any pick, Weapon Focus (any Pick)

If you hit the same creature with both picks in the same round, you can rend with your picks as a swift action. This attack deals base damage from one pick + 1-1/2 times your Str bonus.

Special

A ranger who has chosen the two-weapon combat style can select Stone Breaker even if he does not meet the Dexterity prerequisite.