Action name: Gun Turret.
Description: You construct a turret with a self-aiming gun. Every 4 seconds, the turret will shoot at an enemy up to 100 feet away, usually dealing <damage> damage. 10% of the time, the turret will fire a rapid series of powerful shots that deals <damage> damage over 3 seconds and ignores all of the target's armor. You may only have a single turret at a time.