When the appropriate trigger occurs, if the Pokémon meets the requirements to evolve, it will do so. Observing a specific object in a specific location with the Pokémon in the party.Traveling through a specific location with the Pokémon in the party.The Pokémon performing a specific action in battle.Spinning and striking a pose with the Pokémon in the party.However, Pokémon Sword and Shield introduced four new triggers, each only used by a very select few Pokémon species: Prior to Generation VIII, the above were the only triggers to evolve Pokémon. Being exposed to an item (such as an Evolution stone).In the core series games, Pokémon normally only evolve after one of three events: 2.1 Pokémon Colosseum and XD: Gale of Darkness.1.2.1.1 If the Pokémon is a certain gender.1.1.8 If the Pokémon is a certain gender.1.1.3 When the Pokémon knows a certain move.Pokémon Brilliant Diamond and Shining Pearl.
