>>26907192In many areas, it is possible for a natural object to appear behind an opponent in a wild or Trainer battle. These objects can be hit by certain moves that can target multiple Pokémon. If the object is hit, it will break or drop Berries and remain in that state until the end of the battle, when the player will pick up an item in the aftermath of the battle.
This is easy way to farm items. And The first time where you can have a lot of evo stones