Steamgunner Controller

The Steamgunner Controller is a Hardmode summon weapon purchased from the Steampunker for. It spawns a Steamgunner Drone to rapidly fire bullets at nearby enemies. Like other minions, summoned Steamgunner Drones are invincible and follow the player for an unlimited amount of time, unless the player dies, summons a replacement minion, or cancels the buff. Additionally, Steamgunner Drones cost 2 minion slots each to summon.

Trivia

 * This item is one of five (the others being the Viscount's Cane, Taboo Wand, Beholder Staff, and Ember Staff) Summon weapons that have a minimum requirement to use, requiring 2 minion slots to summon 1 of its minion.