about 4 years
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playruneterra
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Have you tried Lab of Legends? Choose a champion and head to battle against a gauntlet of increasingly powerful foes.
💪 Wins grant rewards to power up cards
❤️ Boss battle wins refill nexus health
Complete the Lab with a champion to receive their unique icon. Collect all 8! http://pbs.twimg.com/media/Et4Ws1oXEAAnZH7.jpg