Wave Beam

The wave beam is a beam that Samus gets in all of her games, save for Metroid Prime 2. It fires electrical energy, and in Metroid Prime it has a lock-on ability that tracks enemies. When charged up, however, it loses its tracking ability in exchange for added firepower.

The missle combination for the wave beam, found in the Magmoor Caverns, allows the wavebuster, a continious fire combo that tracks enemies with a beam of elevtrical energy.