Possibility Smite (3.5e Maneuver)

A more powerful form of the mightstrike, the possibility smite maneuver allows you to draw on even more powerful possible attacks.

As part of this maneuver, you make a single melee attack against an opponent. You make two attacks rolls for it, selecting which one to use. If you use the higher attack roll, the attack deals 1d6 extra damage. If you use the lower attack roll, the attack deals an additional 4d6 damage. In addition, the critical threat range of your weapon is doubled for that one attack. Possibility Smite does not stack with other affects that increase the critical threat range of a weapon. If both rolls are the same, you must reroll one until you get a different result. This maneuver is a supernatural ability.