Mightshield (3.5e Maneuver)

With this maneuver, you weave probability to shield yourself from attacking, superpositioning an attack that might have been, a possible attack which is less accurate, onto a foe’s strike

Whenever an enemy makes a melee attack against you, after they have made their attack roll, you may initiate this maneuver to force them to reroll that one attack roll, with a -2 penalty. They must use the results of the reroll to determine if the attack hits you. You may choose to initiate this maneuver after your enemy has made his attack roll. This maneuver is a supernatural ability.