Shadow Pokémon can be exceptionally powerful in Pokémon Go, and it helps to know which ones you should use to overwhelm any foe. Legendary Shadow Pokémon are some of the rarest ones in the game, and you might be wondering if you should purify your Shadow Lugia.

We normally recommend keeping any Legendary Shadow Pokémon you catch in Pokémon Go. However, there are distinct differences between Shadow Pokémon and their standard forms, so it’s important to know which is more worth your time. It all comes down to the Pokémon’s stats and what they’ll be fighting. Here’s what you need to know about Shadow Lugia and if it’s better than the standard one in Pokémon Go.