Pokémon Korea has announced a very short promotion for obtaining a King’s Rock through Mystery Gift. This code is only available until September 6th at 14:59 UTC. King’s Rocks are fairly uncommon in Pokémon Sword and Shield, so a free one is always welcome.
To obtain this enter the following code:
K2020CHAMP10NS
We’ll be sure to update you on free Mystery Gift items as we learn about them.