Effervescence

Effervescence is a craftable post-Moon Lord magic gun. It fires a spread of five purple bubbles that travel in a straight line before simultaneously erupting into five blue bubbles each; the blue bubbles travel in the same direction as the purple bubbles and linger before popping. The purple bubbles can pierce infinitely while the blue bubbles pop upon contacting an enemy and have slight homing properties; additionally, both types of bubbles will pop upon contact with tiles.

Tips

 * The high amount of projectiles spawned by this weapon make it ideal for crowd control or damaging large enemies many times.
 * Note that the high amount of projectiles spawn can cause drops in frame rate, especially on low-end computers.

Trivia

 * In chemistry, effervescence is the escape of gas from aqueous solutions, which causes bubbles and fizzing.