From Guild Wars 2 Wiki
— In-game description
- Choice of a reward for reaching level 34 and 54
- Reward for reaching level 43
- Cannot be used in World versus World.
- Enchanted Combat Boosts can be created from this booster from Black Lion Traders or Boost Enchantment Powder.
- Booster items are inactive once the character logs off or goes to the character select screen. The time as of logging off is fully available once logged back in.