"Mastering Shadow Raids and Gems in Pokemon Go: A Comprehensive Guide"

Pokemon Go introduces Shadow Raids with powerful Shadow Pokemon that become enraged as you battle them, making them even harder to defeat. To win, players need to collect Shadow Shards and Purified Gems, which can be obtained by defeating Team Go Rocket members or winning Shadow Raids. Four Shadow Shards can be combined to create a Purified Gem that subdues Shadow Raid Bosses. The effects of Purified Gems stack, so players can hold up to 10 of them to decrease a Shadow Raid Boss's attack and defense.