BREAK Evolution rule
Chesnaught BREAK retains the attacks, Abilities, Weakness, Resistance, and Retreat Cost of its previous Evolution.
Tough Hammer
Damage: 160
This Pokémon does 30 damage to itself. This attack does 30 damage to 1 of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)