In Pokemon Legends Arceus, you can get Shaymin only during “Request 92: A Token of Gratitude Request“. This guide shows how to get A Token of Gratitude Request request and how to complete it to get Shaymin.
Request Description: Help Medi of the Diamond Clan find the rare Pokemon she met long ago, and survey the Pokemon while you’re at it.
How to start Request 92 (The Darksome Nightmare)
To get the quest, you will need to complete the entire campaign and you also need to have a Pokemon Sword & Shield save file on your console. After completing the campaign, the credits will roll and you will find yourself in Jubilife Village. Now go to the Galaxy Hall and the quest will be available on the notice board.
Spek With Medi
Next, you have to go and talk to Medi in Fieldlands Camp and she will ask you to find the field of Gracidea Flowers located somewhere in the Obsidian Fieldsland.
Shaymin Location (Field of Gracidea Flowers)
The field of Gracidea Flowers is in the Floaro Gardens, which is on the northwest side of Obsidian Firldlands as shown in the picture below. Go to the marked location and Shaymin will appear after a cutscene. Catch the Shaymin to complete the request.
