Click the green flag.
When the Warden isn`t walking or running, it especially does an idle animation. And the reason why the Warden moves left to right it`s because it`s blind. The souls on its chest creates a low throbbing heartbeat sound, in tandem with the Darkness effect. The animation and sound speeds up gradually as the warden becomes more agitated. Wardens prefer to track down mobs that it finds most suspicious, rather than the closest one.
