Crushing Vise

(Tome of Battle: The Book of Nine Swords, p. 82)

Stone Dragon (Strike)
Level: Crusader 6, Swordsage 6, Warblade 6,
Casting Time: 1 standard action
Range: Melee attack
Target: One creature
Duration: 1 round

The overwhelming power behind your attack leaves your opponent unable to move. The punishing strike forces it to waste a few moments shrugging off the effects of your attack.

By making a powerful, focused blow, you leave your opponent unable to move. The crushing weight of your attack forces it to waste a precious moment regaining its footing.

As part of this maneuver, you make a melee attack. This attack deals an extra 4d6 points of damage. If the creature you hit is standing on the ground, your attack also drops the target?s speed to 0 feet (for all movement types) for 1 round. It can act normally in all other ways.

This maneuver functions only against opponents standing on the ground. A flying creature or a levitating target is immune to the speed reducing effect, but not to the extra damage.