Mastery Experience Booster
Catch up on story, brush up your Masteries, and prepare for The Icebrood Saga with the Expansion Boost Special Event! From today until September 17, you’ll gain double the Mastery experience in Guild Wars 2: Heart of Thorns™, Living World Season 3, Guild Wars 2: Path of Fire™, and Living World Season 4 maps.
— Official description
|Mastery Experience Booster||Rewards||Community Goal|
|September 3 to September 17 2019||Mastery experience||0|
- Visiting any of the listed maps will grant their appropriate expansion booster: