Check out League of Legends Arena, LoL's new game mode

A Soul Fighter event, League of Legends Arena is a new game mode in which four teams of two players each fight one another in rotating combat rounds.

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League's new ARENA mode is INSANELY GOOD! (2v2v2v2)

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Check out League of Legends Arena, LoL's new game mode

Everything You Need to Know about LoL Arena 2v2v2v2 Game Mode - League of Legends Tracker