Pokemon Go Catch Mastery event: Shiny Archen, fossils, bonuses & more admin 4 days ago New York State Comments Off on Pokemon Go Catch Mastery event: Shiny Archen, fossils, bonuses & more 3 Views The First Bird Pokemon, Archeon, will be the headliner for the Catch Mastery event in Pokemon Go, and will be accompanied by fellow fossils. Share Facebook Twitter Stumbleupon LinkedIn Pinterest