Booster Items

Booster items temporarily ramp up your gains — extra XP, Ancient Energy, ore, shards, or hunter points — for a limited window. Personal boosters affect only you; global boosters stack a bonus for the whole server while they're active.

For how booster bonuses stack and tick down, see Boosters. Many of these drop in crates, boxes and keys — especially the Common, Rare, Epic, Legendary and Global Booster Boxes.