Question: how to evolve eevee to sylveon in ultra sun?
Answer: How To Evolve Eevee Into Sylveon. To start things off, get Eevee to learn a Fairy type move. Next, head to Pokémon Refresh via the menu and earn two hearts by feeding it Poké Beans and petting it. When everything's all set up, it'll evolve into Sylveon when it levels up.