Stream Slash is a special move used by Tsubasa Otori and his Earth Eagle 145WD.
Beyblade: Metal Fusion
Stream Slash is Tsubasa's second special move where Eagle attacks from mid air as a full power slash much like an aerial Metal Wing Smash. Tsubasa first used this move to combat Yu Tendo's Inferno Blast. It was used again in the Destroyer Dome Final against Jigsaw but instead of a mid-air slash, it was used as a vibrational shockwave.