Flying Knee (3.5e Maneuver)

''With a ridiculous show of lower body strength, you leap at your target and strike them in the face with one of your most powerful available body parts: your knee. A sickening crunch follows as the foe's jaw is smashed by the force of the attack.''

Make a single melee attack against a target of your choosing. This strike’s damage is multiplied by the number of size categories the opponent is larger than you are (minimum x1). In addition, should you target a flying creature with this attack, they fall to the ground (taking falling damage if necessary) and are knocked prone.

If you wish, you may use this strike on a charge, which still takes a full-round action as normal. Doing so increases the damage multiplier due to size by 1, making it a minimum of double damage.