There Are New Shiny Shadows In Pokémon GO For Luminous Legends Y
Shiny Shadow Venonat, Seedot, & Sneasel are available in Pokémon GO through the Rocket Leaders... but whats that about Shiny Shadow Grimer!?
Team Go Rocket Leaders Team Go Rocket Shiny Shadow Pok Shadow Venonat Shiny Shadow Venonat Shadow Seedot
Source: bleedingcool.com