Berserk in Pokémon Sword & Shield

Boosts the Pokémon’s Sp. Atk stat when it takes a hit that causes its HP to become half or less.

Raises Special Attack when a damaging hit makes HP cross from above half to half or less.

When a damaging move causes the Pokémon’s HP to fall from above half of its maximum to half or less, raises its Special Attack by one stage.