Niantic is giving every Pokémon Go player a way to encounter the Mythical Pokémon Diancie for free in May as long as they complete a set of Special Research, though there is also one big exception.

Diancie was originally released as part of Pokémon Go Fest 2023’s featured Special Research last year and has not been available to obtain since then. Now, the Rock/Fairy-type Mythical Pokémon will be free to claim via Pokémon Go Special Research Story: Glitz and Glam which will go live on May 1 for all players—though there is one big caveat for players who already caught a Diancie during Go Fest 2023.