Japanese publication CoroCoro has revealed the name of a new move in Pokémon Sword and Shield: Name: てっていこうせん (Do-or-Die) Type: Steel Category: Special Damage: 140 Effect: Does major damage but reduces user's Hit Points by 50% Pokemon Sword Shield The "Most Powerful" Steel-type move named as てっていこうせん (Do-or-Die)
Exhaustive Beam or Do-or-Die might be the English name of the “most powerful” Steel-type move てっていこうせん in Pokémon Sword and Shield