Well, I had originally designed it to work in the Trilogy for Wii. It would be a short range, yellow beam that you could default to. The Power Beam would become the Sword Beam by selecting the Power Beam and holding the button.
Normal shot: Sustained beam fire. Short range, but can cut through armor like nothing.
Charged shot: Fires the beam like an arrow, causing a plasma explosion when it hits something.
Charge combo: A continuous fire attack. Uses 10 missiles to start and 1 missile per second after that. It's a continuous yellow beam that extends with near infinite range. It's called "Halberd".