In the aforementioned houseruled 2nd edition Advanced Dungeons and Dragons games my gaming group runs, players are continually encouraged to come up with new or unique ways of doing things with one's character. One of my characters, a half-dragon thief/martial artist, has a few maneuvers I've created that may be of interest to anyone that used martial arts in either 2nd AD&D or the Oriental Adventures handbook setting.
Long Talon Heart Strike:
Forgoing all other attacks for the round, on a successful hit with this maneuver, the opponent struck will take no damage. However, once the opponent has moved a total of 15 feet (or ten feet if the opponent is size Small or smaller), they must immediately make a saving throw vs. Death Magic. A successful save means the opponent is stunned for 1d2 rounds. A failed save means that the opponent falls, instantly dead.
The Long Talon Heart Strike may only be attempted once on an opponent. If the opponent's save is successful, then it is immune to the attack forever after. This attack will automatically fail if used against undead.
Heart of The Dragon Kata:
Once/day the martial artist may apply half of their level (or level of Martial Artist, if they are multi-classed) as a bonus to one's Strength score. This bonus lasts only one round.
Relentless Midnight Kata:
Once/day, if the Martial Artist has been wounded to half or more of one's maximum hit points, the Martial Artist may spend one melee attack to gain temporary hit points equal to four times the Martial Artist's level. These hit points are temporary, lasting for 1d6 rounds, and the martial artist will suffer damage at the end of the 1d6 duration if healing has not been performed.