Destructions
Destructions are a defensive stance that, when executed properly, have the potential to 'destroy' an opponents legs and fists. The great thing about destructions is that the bigger, stronger, and harder your opponent is trying to hit you, the better the chances are for you to break bone. Destructions are used with the knees and elbows. As such they are very effective. Just look at the Anderson Silva video for how effective a destruction can be!
Destructions will most likely be in high demand from MMA fighters around the world. After all how many techniques allow you to have an excellence defense while still managing to take your opponent out of the fight?