Swallow the Master Sword

You take the master sword and shove it blade-first down your throat. After a moment of careful muscle control you swallow the entire thing, hilt and all. You smile and wave at the Megaroth coyly.

"Thats... a good trick..." says the Megaroth, "But eating the Blade of Evil's Bane will do you no good!"

"Oh?" you reply, "Then try this on for size!" you extend your index finger and charge it up for a tremendous HyperPoke, and sure enough your finger sparkles with the power to repel evil! Awesome!

You jab your finger deep into the Megaroth and it wiggles for a moment before popping into another dimension! Good work!