There are many interesting Galarian forms of previous Pokémon in Sword and Shield. Their evolution methods are certainly unique, especially when it comes to Galarian Yamask. If you've been thinking about evolving a level 30 Inkay from X and Y by flipping your 3DS upside down was bizarre, here's how to evolve your Galar Yamask into Runerigus.
You will need to travel on Route 6 to get Galarian Yamask so that it can evolve into Runerigus. This will be possible for you once you have earned up to three badges and are well on your way to earning your fourth badge.
For the level, we recommend that Yamask be at least 32 years old. Once you get it, he takes you a few steps closer. The next method is tricky, which is to make sure your Galarian Yamask has taken more than 49 damage from his HP. For example, if your Yamask has 64 HP, you will need at least 15 HP for this method to work.
You can let your Yamask fight wild Pokémon to reach that threshold, but using a revive after passing out or using a move that will deal damage to itself as a Curse won't work. Location doesn't really matter, but you can be in the Wild Area to save time. After taking more than 49 damage, you can escape from the wild combat of Pokémon.
Next, go to Dusty Bowl, which is located under Hammerlocke. Then you will go to your left and travel to Dusty Bowl until you see a stone carving which is a rock structure that looks like Stonehenge from England. When you enter underneath the giant rock sculpture, it will trigger the Galarian Yamask to evolve into Runerigus, no matter what level it is at.
