Help: Invisibility Usage sling 'invisibility' <target | object> Available Slinger level 4; Samurai level 7; Assassin level 25. Invisibility hides a person or object from ordinary sight. For Slingers, it is a classic field tool for scouting, travel, and getting one careful step ahead. Notes Attacking or certain actions may break invisibility. Detect Invisibility can reveal it. See Also: detect invisibility, remove invis