The Crown Tundra DLC for Pokemon Sword And Shield introduces a new Galarian form for Slowking, a counterpart to the Isle Of Armor’s Galarian Slowbro.
Much like Galarian Slowbro, Galarian Slowking requires a special item only found in the Crown Tundra DLC to obtain. This item is called the Galarica Wreath, and can be obtained by collecting Galarica Twigs that can be found throughout the Isle Of Armor and Crown Tundra areas.
Once players have collected 15 Galarica Twigs, they must bring them to an NPC located in a cave in the Roaring Sea Caves area. This NPC will help the player craft a Galarica Wreath, which they must use on Galarian Slowpoke to evolve it into Galarian Slowking.
To get to this NPC, players can follow these directions:
Stay on the lower part of Giant’s Bed, avoiding going up any cliffs.
Enter the Giant’s Foot, then enter the Roaring Sea Caves on the bike.
While in the cave, keep heading to the east until reaching the Frigid Sea.
Upon exiting the caves, head left down the river there to find the NPC.