TR50

TR50 teaches a move to a compatible Pokémon in Pokémon Sword & Shield. Technical Records are consumed after use, but can be re-bought from Watt Traders. TR50 is Leaf Blade.

Game descriptions

Sword, Shield:(Watt Trader - 5000W)
Sword, Shield, B.Diamond, S.Pearl:The user handles a sharp leaf like a sword and attacks by cutting its target. Critical hits land more easily.
Scarlet, Violet:The user handles a sharp leaf like a sword and attacks by cutting its target. Critical hits land more easily.