Tabuu Weapon: Subspace Dragon

As everyone who has ever played Super Smash Brother Brawl knows, Tabuu is the final boss on the adventure mode called: The Subspace Emissary. He powerful of course, and enough attacks worthy of calling him a Final Boss. This attack as >>>I<<< call it, is the Subspace Dragon. Im sure Nintendo has its own name for the beast.
Tabuu gets atop a dragon head as the Dragon charges up and then shoots a massive beam across the stage. In tougher difficulties, the Beam charges up faster and grows in power. Your only defence against the blast is to jump over the beam at the right moment and stay up in the air as long as possible until the beam subsides.