Needs review
Source: Draconomicon

Description: You can rend opponents you hit with your claws.

Prerequisites: STR 13, Power Attack, Two Claw attacks, Snatch, Size Huge or Larger

If you strike the same opponent with two claw attacks, you automatically deal extra damage equal to that of two claw attacks plus 1-1/2 times your Strength bonus. You cannot grab an opponent at the same time you rend that opponent.