The line comes from Deckard Cain, a recurring character in Blizzard's Diablo series, where he often greets the player with this phrase. It became one of the most quoted lines in action RPG history because Cain's voice and delivery are so distinctive. Over time, players reused it in forums, videos and memes to introduce long explanations, backstory dumps and classic PC gaming nostalgia. The quote still shows up in modern edits because it instantly signals old-school Diablo and the idea that a big explanation is coming.