Airjitzu

Airjitzu (nicknamed Cyclondo by Jay) is a martial art from Ninjago that allows you to move off the ground in the air, slowing gravity. It was created by Sensei Yang. Airjitzu was used by:

Kai
Jay
Cole
Zane
Nya
Lloyd Garmadon
Morro
Sensei Yang
Sensei Yang's Students
Sensei Wu???

The ninja later forgot Airjitzu, and Morro is deceased. Sensei Yang is alive, but has not been seen since Day of the Departed.