Luxin Cannon

 is a gun which rapidly fires small, solidified beams of light at enemies. When the magazine is emptied, the tip of the crystal will be launched. When the crystal strikes a wall, it splits into 5 smaller crystals.

Trivia

 * This gun is a reference to The Lightbringer book series by Brent Weeks. The main character's last name is Guile, he is the Prism, Luxin is the name of the solidified light that is used by the magic users of that world, and Lord Omnichrome is a major antagonist of the series.
 * "Falsely rumored to have natural healing abilities" is a reference to crystal healing, a pseudoscientific alternative medicine technique that employs stones and crystals.
 * The synergy is a reference to Ganon from the Legend of Zelda video game series. The synergy being named "The Return" may be a reference to the game-over screen from Legend of Zelda 2: Adventure of Link, which included the line "RETURN OF GANON".
 * The Luxin Cannon will display a special reload animation if the clip is completely empty, where the broken tip reforms.
 * If the player dodge rolls during the animation, the gun will briefly disappear but the reforming section will remain visible. Its animation will pause for the duration of the roll.