According to Venture Beat, the championships opened with a live performance by Madison Beer, Miyeon and Soyeon of (G)I-DLE, and Jaira Burns. The AR bit came in with a special appearance by K/DA, a band in the game, whose song of "POP/STARS" was the one being sung by all parties onstage, both live and virtual.
While the AR gimmick was reported on before the ceremony, it was meant to be a major surprise for those in Korea and those watching at home. In the end, the victorious team was Invictus Gaming from China, the first-ever LoL Finals win for the country—Invictus beat out Fnatic from Europe.
You can watch the full opening ceremony below:
Per the above mentioned story, the League of Legends World Finals is the single most watched esports event around the globe. This little stunt, shall we call it, builds on the appearance of an Elder Dragon on the stage at last year's championships.
Much like World of Warcraft, League of Legends is a massive, genre-bending online multiplayer experience that allows a players to take on the role of a fantastical warrior. The more time spent playing the game, defeating enemies, and picking up items, the more powerful these warriors become.
Almost 10 years old, the game boasts over 100 million players, based on a 2016 report from Polygon.