In Pokémon Legends: Arceus, you will be able to evolve Sneasel into two different options, which are needed to complete the Pokédex. However, acquiring one of the forms is slightly more complicated than the other and requires you to use a new mechanic introduced in Legends: Arceus. Sneasel can evolve into either Weavile or Sneasler, but both require an item to initiate the evolution. To get one of the evolutions, you will also be required to catch a Hisuian form to complete both evolutionary lines.