Pokemon Go Shadow Raids Debut Next Week, Shadow Mewtwo Coming May 27 - GameSpot

Giovanni and his minions are taking over your local Pokemon Gyms.
Pokemon GO is a new project for mobile devices that encourages fans to search far and wide in the real world to discover Pokemon.

Pokemon GO News - GameSpot

Pokémon Go - Wikipedia

Shadow Mewtwo in Shadow Raids - Leek Duck

Shadow Raids debut during the Rising Shadows event! – Pokémon GO

Pokemon Go fans want Niantic to “rethink” future Shadow Raids - Dexerto

Shadow Raids arrives to Pokémon Go, debuting Shiny Shadow Mewtwo News

Shadow Mewtwo returns this week in Pokémon Go

Mewtwo in 5-star Raid Battles - Leek Duck

Nintendo – DJMMT's Gaming (& More) Blog

Pokemon GO News - GameSpot

Pokemon Go Remote Raid Changes Were “Incredibly Difficult” To Make Says Niantic – NoxPlayer

Pokémon Go - Wikipedia

Dark Flames - Timed Research (LeekDuck) : r/TheSilphRoad