How to get it
- Play an event that explicitly enables Beast Balls for its raid or research encounters.
- They are supplied inside those encounters, rather than collected from normal PokéStop spins.
How to use it
- Use the balls provided on the catch screen. In eligible raids they replace Premier Balls.
- The encounter allocation expires when the encounter ends.
Worth knowing
These balls are not guaranteed at every Ultra Beast raid: check the event announcement.
A Pinap or Silver Pinap can be attractive when the improved catch odds make extra Candy more valuable than another catch boost.
Sources & further reading
Event rewards, shop offers, and limits can change. Check the current in-game description for event-specific rules. Worked examples are illustrative calculations.