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) / Exhaustive Beam / All-Out Resistance
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)
Pokémon Blog 
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