Sōryūha

(only in movies and anime), also called Dragon Strike in the English dub, is Tōkijin's most powerful attack it calls forth a powerful burst of yōki which takes the form of a lightning like discharge. As Sesshōmaru grows more powerful with the Tōkijin the more the attack comes to full form, i.e. in the beginning, Sōryūha looked like stokes of lightning, but as the attack improved it became a powerful dragon-like energy wave. It was also used in the two Playstation 2 games  Secret of the Cursed Mask and  Feudal Combat.