The phrase combines two long-running gaming and anime references. Demacia is the proud kingdom in League of Legends, released in 2009, and its champion Garen is famous for shouting the name as he charges into battle. The stuttered opening copies the Yu-Gi-Oh catchphrase It's time to d-d-d-duel, made widely known by the anime and card game in the early 2000s. Mashing the lines together became a popular joke in montages and streams, where players use it whenever a duel, draft or team fight is about to start.