First Blood is a long-standing announcement from League of Legends, Riot Games' multiplayer online battle arena game first released in 2009. The announcer calls it when a player scores the first kill of a match, a moment that often sets the tone for the rest of the game. The line became familiar to millions of players through countless matches and streams, and clips of it spread into edits, memes and highlight videos. It remains popular because it instantly signals a decisive opening play without needing any extra explanation.