Reimagining Progression: The Mastery System
https://www.guildwars2.com/en/news/r...astery-system/
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What Can I Get From Masteries?
Masteries award account-wide abilities and bonuses. Here are some examples of Masteries you can train in the Heart of Thorns expansion in both the Heart of Maguuma and the coreGuild Wars 2 world:
Master Legends: Train in legendary crafting to learn to create all existing legendary weapon precursors and new legendary weapon precursors introduced with Heart of Thorns.