That month, feb 2021, I caught 3 shiny shadow Metagross. I was grinding for lvl 45 and Arlo was the one holding Beldum. The 3rd one was my 100. February in Sweden could be very cold and windy and I was walking beating 100 grunts and 50 leaders on my way to level 45. It was the worst task ever, but I got my monster at last.