Mightstrike (3.5e Maneuver)

The mightstrike'' is exemplary of the probability magic used by adepts of the Coin’s Edge discipline. Its name comes not from its strength, but the way in which it works – it calls into existence attacks that could have been, allowing its user to choose whichever is best.''

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 resolves normally. If you use the lower attack roll, the attack deals an additional 1d6 damage, as you call into reality a less accurate, but more damaging potential strike. If both rolls are the same, you must reroll one until you get a different result. This maneuver is a supernatural ability.