If you technically own a Motisma on your trainer's phone, and you have a Pokédex controlled by Motisma, you don't have its habitat or data. However, you will be able to find one and change its forms in the game. Here is our guide on where you can catch Motisma and change its forms to Pokemon Sword and Shield.
Motisma's Location
Motisma is a rare encounter located in the wilderness area. Weather plays a very big role in getting Motisma - you need it to rain or thunder. Make your way to Outrage Lake and ride your Motisma bike. Soon you will see the land with a wedge of grass with a den. There are other types of Pokémon, including Crapustule and Tarenbulle, here. Motisma will have a sprite from beyond, and once you see it, go ahead and run it.
Location of the Motisma catalog
To find the Motisma catalog, you must have access to Wyndon. At the Pokémon Center, walk or cycle to the right, where there will be many townhouses. Keep going up until you see the penultimate house and go inside. You will see a member of the League staff. Talk to him and he will tell you how Motisma likes to get into different engines. You will have the chance to fight it. Say yes and you will start the battle against its three rotoms. They are at level 30 and the forms you will be fighting are the Lawn Mower, the Washer, and the Microwave Oven.
Change form
After defeating the league staff member, he will give you the Motisma catalog. After capturing a Motisma, you are free to change the shapes of your Motisma, whether for fun or for combat.