Army-Felling Blow (3.5e Maneuver)

 With a devastating sweep of your weapon, you can fell an entire legion.

As part of this maneuver, you make a single melee attack against an opponent. If it hits, it deals an additional +6d6 damage. In addition, if the attack hits, and there is an enemy that you threaten adjacent to opponent struck, you may attack them as well, although that attack only deals +4d6 damage. If the second attack hits, and there is an additional enemy adjacent to either target, you may make a third attack, which deals +2d6 damage. You do not make new attack rolls, but instead use the first one to determine if your attack hits. You still make new damage rolls (or rolls to confirm critical hits) for the second and third targets. You may never attack the same creature twice as part of this maneuver.