Gacruxian Mollusk

The Gacruxian Mollusk is a Hardmode non-consumable rogue weapon that can be fished up in the Astral Infection. When used, it throws a snail that drops sparks as it travels. The snail travels in a straight line for a moderate distance before being affected by gravity. The sparks are affected by gravity, ignore tiles, and weakly home in on enemies.

Performing a stealth strike with the Gacruxian Mollusk will cause the snail to leave a trail of additional snails, which continuously emit sparks for 3 seconds before disappearing. These additional snails will strongly home in on nearby enemies, or hover in place if no enemies are close enough.

Trivia

 * Its name is a reference to Gacrux, which is a red giant star in the Crux (Southern Cross) constellation.