"Black Mantis" is one of the four Lost+Found styles.
Martial Style This style can complete a Harmonic Combo. The Black Mantis style is a rare martial variant of the Heavenly Wave support style. Practitioners of the Black Mantis use unusual shifting stances and special handstrikes to target vulnerable areas of their opponents -- oftentimes with devastating results. Opponents who suffer the full measure of the sequence of strikes of this style are often left witless for a moment afterwards, as the disruption of their chi causes confusion.
The first part of the video shows Black Mantis in its inital state. The second part shows this style with damage and speed maxed out.