With driving force, you push your enemy down and pin it to the ground with your gouge.

Daily ✦     Martial, Weapon
Standard Action      Melee weapon

Requirement: You must be wielding a gouge.

Target: One creature

Attack: Strength vs. AC

Hit: 3[W] + Strength modifier damage.
Level 25: 4[W] + Strength modifier damage.

Miss: Half damage.

Effect: You knock the target prone and grab it. Until the grab ends, the target cannot stand up. When you attack any creature other than the target, the grab ends. When you push, pull, or slide the target while it is grabbed by you, the grab does not end as a result of the forced movement, and you can shift your speed to a square adjacent to the target.

Published in Dark Sun Campaign Setting, page(s) 108.