A unique element of Pokémon Legends: Arceus is the freedom of choice it offers trainers when deciding how to interact with a wild Pokémon. Beginners may believe that battles will always happen when they encounter a new Pokémon like past games, but it has gotten a lot more complicated. Now players will have to attract the attention of a wild Pokémon using one of two methods.
Trainers can guarantee a battle with a wild Pokémon by closing one of their parties. To do this, press X until your Pokémon is displayed in the lower right corner of the screen. You can then switch between your Pokémon by pressing L or R until the center you want to use is highlighted. From there, throw the Poké balls in front of the wild Pokémon with the ZR trigger and a fight should begin.
But another option is to throw an empty Poké ball. When aiming with the ZL, you will see a symbol above the wild Pokémon's head (as shown below). If this is green, the Pokémon is likely to be caught on the first try. If not, you'll only have to anger the wild Pokémon if the ball is thrown, which usually results in a battle.