League of Legends is Riot Games' multiplayer online battle arena game, and its champion mastery system rewards players for repeated games on the same champion. Tier 5 was the original top grade, shown by an ornate winged badge that players could flash in game with an accompanying sound. As clips, streams and montages spread across YouTube and Twitch, the cue became shorthand outside matches too. It is still used because the meaning is instantly clear to anyone who plays: time invested, champion mastered, and a flex that needs no explanation.