Shadow Blade is an item in Dota 2, Valve's team-based strategy game, that grants its holder the Shadow Walk ability to turn invisible for a short time. The activation sound has become shorthand in gaming videos for going unseen, so editors outside Dota 2 also use it when a character disappears, sneaks past opponents or prepares an ambush. Because invisibility is a familiar mechanic across many games, the short effect remains easy for viewers to understand even without Dota knowledge, which keeps it useful for montages, memes and reaction edits.