The Sulphuric Acid Cannon is a post-Moon Lord ranged weapon that is dropped by the Mauler after Polterghast has been defeated. It fires homing sulphuric blasts at enemies. The blasts shot by this weapon will stick on to enemies hit and continue to deal damage repeatedly before vanishing two seconds after sticking to an enemy. The sulphuric blasts can travel through solid tiles.
Its best modifier is Unreal.