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PSA: Now that the new loading screen shows champion mastery, here's a friendly reminder that it tells you fuck all about the player's actual skill at the game : r/leagueoflegends
Surrender at 20: Red Post Collection: Champion Mastery Q&A
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How Champion Mastery Works in Legends of Runeterra - Legends of Runeterra Guides - Out of Cards
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Champion Mastery Guide – League of Legends Support
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How to show champion mastery symbol in LOL League of Legends Mac / Windows (read description) - YouTube
LoL: New Challenges Feature Begins PBE Testing
