Gokuryūha (獄龍破, "Prison Dragon Blast"), also known as Dragon Twister in the English dub, was Sō'unga's most powerful attack, and it possessed more destructive power than Tessaiga's Bakuryūha. Sō’unga unleashes a large, violent, and powerful purple/black tornado that annihilates everything caught in its path. Myōga described this as being the attack of a dragon from Hell. Its strength is so great it can easily bowl-over the Backlash Wave. However, if both Tessaiga and Tenseiga are close by, the strength of the Dragon Twister is diminished. In the third movie, Inuyasha declares he has someone to protect, this determination thus giving him more strength so he can perform a stronger Backlash Wave. This Backlash Wave, also coupled the combined power of Sesshōmaru's Dragon Strike, was able to finally destroy the spirit of Sō’unga.