Regulus Riot

The Regulus Riot is a Hardmode rogue weapon dropped by Astrum Deus. It fires a disk that flies to where the cursor was when it was used and homes in on enemies.

Performing a stealth strike with the Regulus Riot will cause it to explode into energy stars on death.

Trivia

 * Regulus is a star system composed of four stars, which has been known for being one of the brightest objects in the night sky.