There is no guarantee that a Shiny Alolan Diglett will appear, but this is currently the best way to obtain one. This Pokemon and its evolved form have one of the more interesting Shiny forms.

Are the Diglett Pokemon shiny locked?

New gift Pokémon: • Porygon • Kubfu • Gmax Bulbasaur/Squirtle • Alolan Meowth, Vulpix, Sandshrew, Raichu, Marowak, Exeggutor, Diglett • Kanto Slowpoke • Alolan Starters Every single one is Shiny Locked.

What does shiny Diglett evolve into?

It evolves into Dugtrio starting at level 26.